Παραπομπή APA

Tapinos,Georges, & Piotrow,Phyllis T. (1975). Six billion people: Demographic dilemmas and world politics. McGraw Hill.

Παραπομπή Chicago Style

Tapinos,Georges, και Piotrow,Phyllis T. Six Billion People: Demographic Dilemmas and World Politics. New York: McGraw Hill, 1975.

Παραπομπή MLA

Tapinos,Georges, και Piotrow,Phyllis T. Six Billion People: Demographic Dilemmas and World Politics. McGraw Hill, 1975.