APA-referens (7:e uppl.)

Johnson, E. R. (1908). American railway transportation (2d rev. ed.). D. Appleton.

Chicago-referens (17:e uppl.)

Johnson, Emory R. American Railway Transportation. 2d rev. ed. New York: D. Appleton, 1908.

MLA-referens (8:e uppl.)

Johnson, Emory R. American Railway Transportation. 2d rev. ed. D. Appleton, 1908.