Παραπομπή σε μορφή APA (7η εκδ.)

United States. Bureau of the Census & United States. National Archives and Records Administration. (1990). 14th census of population, 1920. National Archives and Records Administration ; Available from Scholarly Resources Inc..

Παραπομπή σε μορφή Chicago (17η εκδ.)

United States. Bureau of the Census και United States. National Archives and Records Administration. 14th Census of Population, 1920. Washington : Wilmington, DE: National Archives and Records Administration ; Available from Scholarly Resources Inc., 1990.

Παραπομπή σε μορφή MLA (8th εκδ.)

United States. Bureau of the Census και United States. National Archives and Records Administration. 14th Census of Population, 1920. National Archives and Records Administration ; Available from Scholarly Resources Inc., 1990.