Παραπομπή σε μορφή APA (7η εκδ.)

United States Census Bureau. (1978). World population 1977: Recent demographic estimates of the countries and regions of the world. U.S. Department of Commerce.

Παραπομπή σε μορφή Chicago (17η εκδ.)

United States Census Bureau. World Population 1977: Recent Demographic Estimates of the Countries and Regions of the World. Washington: U.S. Department of Commerce, 1978.

Παραπομπή σε μορφή MLA (8th εκδ.)

United States Census Bureau. World Population 1977: Recent Demographic Estimates of the Countries and Regions of the World. U.S. Department of Commerce, 1978.