APA-referens (7:e uppl.)

Lenz, G. Periodization and american studies: Günter Lenz Encyclopedia of american studies, vol.3 / Hg. G.T. Kurian. New York, 2001.

Chicago-referens (17:e uppl.)

Lenz, Günter. "Periodization and American Studies: Günter Lenz." Encyclopedia of American Studies, Vol.3 / Hg. G.T. Kurian. New York, 2001 .

MLA-referens (8:e uppl.)

Lenz, Günter. "Periodization and American Studies: Günter Lenz." Encyclopedia of American Studies, Vol.3 / Hg. G.T. Kurian. New York, 2001, .