Citazione Stile APA (7a Edizione)

Douglas, P. H. (1971). Social security in the United States. Arno Press.

Citazione stile Chigago Style (17a edizione)

Douglas, Paul Howard. Social Security in the United States. New York: Arno Press, 1971.

Citatione MLA (8a ed.)

Douglas, Paul Howard. Social Security in the United States. Arno Press, 1971.