Amundsen, R., Ellswoth, L., Höver, J., & Malmgren, F. (1926). The first flight across the polar sea (1a. ed.). Hutchinson & Co.

Amundsen, Roald, Lincoln Ellswoth, John Höver, and Finn Malmgren. The First Flight Across the Polar Sea. 1a. ed. Londres: Hutchinson & Co, 1926.

Amundsen, Roald, et al. The First Flight Across the Polar Sea. 1a. ed. Hutchinson & Co, 1926.