APA (7e ed.) Bronvermelding

Hammerstrom, G. (1976). Descriptive statistics for public policy analysis. Learning Resources in International Studies.

Chicago (17e ed.) Bronvermelding

Hammerstrom, Gary. Descriptive Statistics for Public Policy Analysis. New York: Learning Resources in International Studies, 1976.

MLA (9e ed.) Bronvermelding

Hammerstrom, Gary. Descriptive Statistics for Public Policy Analysis. Learning Resources in International Studies, 1976.