Erlewine, Stephen. Led Zeppelin Review by Stephen Thomas Erlewine // Led Zeppelin. allmusic.com. Посетен на 2021-12-20. "Babe I'm Gonna Leave You" shifts from folky verses to pummeling choruses; "Good Times Bad Times" and "How Many More Times" have groovy, bluesy shuffles; (на английски)
billboard.com
Chart History // Led Zeppelin. billboard.com. Посетен на 2021-12-20. (на английски)
cashboxmagazine.com
CASH BOX Top 100 Singles // Week ending APRIL 26, 1969. cashboxmagazine.com. Архивиран от оригинала на 2012-08-26. Посетен на 2021-12-20. (на английски)
Greene, Andy. Led Zeppelin, 'Led Zeppelin' (1969) // Music Lists. rollingstone.com, 2006-07-25. Посетен на 2021-12-20. Jimmy Page's guitar pounces from the speakers, fat with menace; John Bonham's kick drum swings with anvil force; Robert Plant rambles on about the perils of manhood. Hard rock would never be the same. (на английски)
Hann, Michael. Led Zeppelin: hear an unreleased version of Good Times Bad Times/Communication Breakdown // Culture. theguardian.com, 2014-04-14. Посетен на 2021-12-20. These two tracks were recorded live at the Olympia in Paris in 1969, for a show broadcast on French radio – a remastered recording of which is the companion disc to June's reissue of the first Led Zeppelin album (accompanied by II and III).
CASH BOX Top 100 Singles // Week ending APRIL 26, 1969. cashboxmagazine.com. Архивиран от оригинала на 2012-08-26. Посетен на 2021-12-20. (на английски)
worldradiohistory.com
100 Top Pops, p. 29 (PDF) // Record World. worldradiohistory.com, 1969-04-26. Посетен на 2021-12-20. (на английски)
