Erlewine, Stephen. Led Zeppelin III Review by Stephen Thomas Erlewine // Led Zeppelin. allmusic.com. Посетен на 2022-05-10. Nevertheless, the heart of the album lies on the second side, when the band delve deeply into English folk. (на английски)
Eder, Bruce. Artist Biography by Bruce Eder // allmusic.com. Посетен на 2022-05-10. There were archival releases, including several box sets, a set of BBC performances, and a live collection in the early 21st century, but Bonham's death was effectively the end of the band. (на английски)
amazon.de
Altman, Billy. Led Zeppelin IV // Amazon.com, Inc. Посетен на 2022-05-11.
Cohen, Jonathan. iTunes Welcomes Zeppelin With Catalog Box // Music News. billboard.com, 2007-10-23. Посетен на 2022-05-10. On what one of its top executive calls "the day we've been waiting for for four years," Led Zeppelin today (Oct. 23) made its catalog available for pre-order at Apple's iTunes Music Store. (на английски)
BRIT Certified // bpi.co.uk, Certified Awards Search. Посетен на 2022-05-10. Въведете Led Zeppelin в полето "Search BPI Awards" и след това натиснете Enter. (на английски)
britannica.com
Fast, Susan. Led Zeppelin // Encyclopædia Britannica.
IFPI Austria // nternational Federation of the Phonographic Industry. Архивиран от оригинала на 2009-06-08. Посетен на 2022-05-10. Забележка: Потребителят трябва да въведе "Led Zeppelin" в полето "Interpret" и да щракне върху бутона "Suchen".
Gibson, Owen. Led Zeppelin to release songs digitally for the first time // UK news. theguardian.com, 2007-10-16. Посетен на 2022-05-10. The group have sold more than 300 million albums worldwide and their release on download stores such as Apple's iTunes Music Store and 7 Digital is likely to boost sales further. (на английски)
IFPI Austria // nternational Federation of the Phonographic Industry. Архивиран от оригинала на 2009-06-08. Посетен на 2022-05-10. Забележка: Потребителят трябва да въведе "Led Zeppelin" в полето "Interpret" и да щракне върху бутона "Suchen".
IFPI // International Federation of the Phonographic Industry – Sweden. Архивиран от оригинала на 2009-02-11. Посетен на 2022-05-11.