Def Leppard (Musical group), Royal Philharmonic Orchestra, & Zeigler, R. (2023). Drastic symphonies. Mercury Records.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDef Leppard (Musical group), Royal Philharmonic Orchestra, और Rick Zeigler. Drastic Symphonies. [Nashville, TNB]: Mercury Records, 2023.
एमएलए (8वां संस्करण) प्रशस्ति पत्रDef Leppard (Musical group), et al. Drastic Symphonies. Mercury Records, 2023.
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