Παραπομπή σε μορφή APA (7η εκδ.)

United States of America Department of Commerce. (1931). Population: Number and distribution of inhabitants. United States Government Printing Office.

Παραπομπή σε μορφή Chicago (17η εκδ.)

United States of America Department of Commerce. Population: Number and Distribution of Inhabitants. Washington: United States Government Printing Office, 1931.

Παραπομπή σε μορφή MLA (8th εκδ.)

United States of America Department of Commerce. Population: Number and Distribution of Inhabitants. United States Government Printing Office, 1931.