APA (7th ed.) Citation

Lewis, M., De Voto, B., & Clark, W. (1953). The journals of Lewis and Clark. Houghton, Mifflin.

Chicago Style (17th ed.) Citation

Lewis, Meriwether, Bernard De Voto, and William Clark. The Journals of Lewis and Clark. Boston: Houghton, Mifflin, 1953.

MLA (8th ed.) Citation

Lewis, Meriwether, et al. The Journals of Lewis and Clark. Houghton, Mifflin, 1953.