Elliot, J., Collen, P., Allen, R., Savage, R., & Campbell, V. (2023). Definitely: The official story of Def Leppard. Genesis Publications Limited.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रElliot, Joe, Phil Collen, Rick Allen, Rick Savage, और Vivian Campbell. Definitely: The Official Story of Def Leppard. Guildford: Genesis Publications Limited, 2023.
एमएलए (8वां संस्करण) प्रशस्ति पत्रElliot, Joe, et al. Definitely: The Official Story of Def Leppard. Genesis Publications Limited, 2023.
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