Jeff Leeds: Amazon to Sell Warner Music Minus Copy Protection. In: The New York Times. 28. Dezember 2007, ISSN0362-4331 (nytimes.com [abgerufen am 8. Mai 2024]).
Stuart Dredge: Amazon Prime Music streaming service launches in the US with 1m songs. In: The Guardian. 12. Juni 2014, ISSN0261-3077 (theguardian.com [abgerufen am 14. Mai 2024]).
Jeff Leeds: Amazon to Sell Warner Music Minus Copy Protection. In: The New York Times. 28. Dezember 2007, ISSN0362-4331 (nytimes.com [abgerufen am 8. Mai 2024]).
Stuart Dredge: Amazon Prime Music streaming service launches in the US with 1m songs. In: The Guardian. 12. Juni 2014, ISSN0261-3077 (theguardian.com [abgerufen am 14. Mai 2024]).