APA-referens (7:e uppl.)

Roberts, P. (1920). The problem of Americanization. Macmillan.

Chicago-referens (17:e uppl.)

Roberts, Peter. The Problem of Americanization. New York: Macmillan, 1920.

MLA-referens (8:e uppl.)

Roberts, Peter. The Problem of Americanization. Macmillan, 1920.