APA-referens (7:e uppl.)

Gras, N. S. B. (1942). Harvard Co-operative Society past and present, 1882-1942. Harvard university press.

Chicago-referens (17:e uppl.)

Gras, Norman Scott Brien. Harvard Co-operative Society Past and Present, 1882-1942. Cambridge, Mass.: Harvard university press, 1942.

MLA-referens (8:e uppl.)

Gras, Norman Scott Brien. Harvard Co-operative Society Past and Present, 1882-1942. Harvard university press, 1942.