Charles, I. (1970). The social security program in the United States (2d ed.). Appleton-Century-Crofts.
Chicago ZitierstilCharles, I. The Social Security Program in the United States. 2d ed. New York: Appleton-Century-Crofts, 1970.
MLA ZitierstilCharles, I. The Social Security Program in the United States. 2d ed. Appleton-Century-Crofts, 1970.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.