APA-Zitierstil (7. Ausg.)

Key, C. E. (1942). The story of twentieth-century exploration. The New Library.

Chicago-Zitierstil (17. Ausg.)

Key, Charles Edward. The Story of Twentieth-century Exploration. New York: The New Library, 1942.

MLA-Zitierstil (9. Ausg.)

Key, Charles Edward. The Story of Twentieth-century Exploration. The New Library, 1942.