APA-referens (7:e uppl.)

Alpert, P. (1951). Twentieth century economic history of Europe. Schuman.

Chicago-referens (17:e uppl.)

Alpert, Paul. Twentieth Century Economic History of Europe. New York: Schuman, 1951.

MLA-referens (9:e uppl.)

Alpert, Paul. Twentieth Century Economic History of Europe. Schuman, 1951.