Amundsen, R., Amundsen, R., & Amundsen, R. E. G. (2004). The South Pole; an account of the Norwegian Antarctic expedition in the "Fram," 1910-12 — Volume 1 and Volume 2. Project Gutenberg.
Chicago Style (17th ed.) CitationAmundsen, Roald, Rual Amundsen, and Roald Engelbregt Gravning Amundsen. The South Pole; an Account of the Norwegian Antarctic Expedition in the "Fram," 1910-12 — Volume 1 and Volume 2. Project Gutenberg, 2004.
MLA (9th ed.) CitationAmundsen, Roald, et al. The South Pole; an Account of the Norwegian Antarctic Expedition in the "Fram," 1910-12 — Volume 1 and Volume 2. Project Gutenberg, 2004.
Warning: These citations may not always be 100% accurate.