Gross, Joe.Heavy Metal (англ.) // Spin : magazine. — Vibe/Spin Ventures, 2005. — February (vol. 21, no. 2). — P. 89. Архивировано 23 марта 2023 года.
Hyden, Steven.Twilight of the Gods: A Journey to the End of Classic Rock : [англ.]. — Dey Street, 2018. — P. 21—22. — «„There are two unwritten laws“ about the album, he wrote. The first was that a listener must claim a track from side two, the „deep cuts with credibility“ side, was his or her favorite, and the second was that one should never say it was their favorite among the band's albums. He blamed this later tendency for why „rock critics who try too hard always make a case for In Through the Out Door being Zeppelin's best“». — ISBN 9780062657121.Архивная копия от 9 ноября 2023 на Wayback MachineИсточник (неопр.). Дата обращения: 28 апреля 2020. Архивировано 10 апреля 2019 года.
Christgau, Robert (1976-10-04). "Christgau's Consumer Guide". The Village Voice (англ.). New York. Архивировано23 сентября 2013. Дата обращения: 18 ноября 2013.
Christgau, Robert (1976-10-04). "Christgau's Consumer Guide". The Village Voice (англ.). New York. Архивировано23 сентября 2013. Дата обращения: 18 ноября 2013.
Hyden, Steven.Twilight of the Gods: A Journey to the End of Classic Rock : [англ.]. — Dey Street, 2018. — P. 21—22. — «„There are two unwritten laws“ about the album, he wrote. The first was that a listener must claim a track from side two, the „deep cuts with credibility“ side, was his or her favorite, and the second was that one should never say it was their favorite among the band's albums. He blamed this later tendency for why „rock critics who try too hard always make a case for In Through the Out Door being Zeppelin's best“». — ISBN 9780062657121.Архивная копия от 9 ноября 2023 на Wayback MachineИсточник (неопр.). Дата обращения: 28 апреля 2020. Архивировано 10 апреля 2019 года.