Offiziellecharts.de – Def Leppard – Yeah!" (in German). GfK Entertainment Charts. Retrieved 2 April 2019. Bronson, Fred (1997). The Billboard book of number one hits (4thed.). New York: Billboard Books. p.709. ISBN 0823076415. a b c d e f "RPM – Library and Archives Canada" (Enter "Def Leppard" in the "Keyword" field). RPM . Retrieved 18 April 2018.

a b c d e f "Def Leppard | full Official Chart history". Official Charts Company . Retrieved 22 July 2017. McDevitt, Cody (5 July 2007). "Def Leppard craves respect in interview". heavymetalmusic.biz. Archived from the original on 27 September 2007 . Retrieved 30 April 2014.

Caulfield, Keith. "Chris Stapleton Soars to No. 1 on Billboard 200 Albums Chart After CMAs", Billboard.com, 8 November 2015. George, Rachel (18 January 2018). "Def Leppard and Journey Co-headline on North America Tour". Billboard . Retrieved 19 January 2018.

Vivian Campbell Compares Def Leppard to His Side Band 'Last In Line' ". Metal Head Zone. 4 March 2019.Def Leppard were among the most successful of the new wave of British heavy metal bands in the early 1980s. They combined the raw power of metal with a pop emphasis on melody, catchy hooks and vocal harmonies that, particularly later on, contrasted sharply with harsher contemporary metal and punk bands. [142] Their early album On Through the Night (1980) appealed to metal fans like of Dimebag Darrell of Pantera [143] and Jeff Hanneman of Slayer. [144] Their hugely popular later albums, such as Hysteria (1987), were different due to their perfectionism in the studio, but appealed to a broad range of music fans. [142] a b c d e f g h i j "CRIA Certifications". Canadian Recording Industry Association. Archived from the original on 12 April 2009 . Retrieved 2008-06-24. a b "Gold & Platinum 1987–1998" (PDF) (in Swedish). IFPI Sweden. Archived from the original (PDF) on 21 May 2012 . Retrieved 8 March 2018. Oricon Album Chart Book: Complete Edition 1970–2005 (in Japanese). Roppongi, Tokyo: Oricon Entertainment. 2006. ISBN 4-87131-077-9. a b Kara, Scott (30 October 2008). "One giant Leppard". The New Zealand Herald . Retrieved 27 September 2011.

Def Leppard Singer's Down 'N' Outz Is Working On Its First Album of New Material". Blabbermouth. 25 December 2017. DEF LEPPARD To Make 'Major' Announcement Soon". Roadrunnerrecords.com. Archived from the original on 20 March 2011 . Retrieved 22 July 2011. They still sound like Def Leppard — there are still cavernous drums, huge guitars, and driving harmonies — but they sound alive and vigorous, making a convincing case that they’re now their own best producers. If they could carry this sound and feel onto an album of originals, they would have a killer record, but saying that diminishes the accomplishment of ”Yeah!”. This is a very good record in its own right.Slang" (ARIA) peak: "The ARIA Australian Top 100 Singles Chart – Week Ending 18 Aug 1996". ARIA . Retrieved 19 April 2020– via Imgur.com. N.B. The HP column indicates the highest position reached. DEF LEPPARD, MÖTLEY CRÜE, STEEL PANTHER To Join Forces For U.K. Tour". Blabbermouth.net. 30 August 2011. Archived from the original on 21 February 2013 . Retrieved 26 January 2013. In December 2014, the band announced a 13-date Canadian tour in April and May 2015. [95] This was followed in February 2015 with the announcement of a 2015 US summer tour with Styx and Tesla from June to October 2015. [96] The tour was then extended to include dates in Japan and Australia throughout November, and a tour of the UK and Ireland with Whitesnake in December. Def Leppard then returned to North America with REO Speedwagon and Tesla in early-2016. [97]