APA (7e ed.) Bronvermelding

Sigafoos, R. A. (1955). The municipal income tax: Its history and problems. Public Administration Service.

Chicago (17e ed.) Bronvermelding

Sigafoos, Robert Alan. The Municipal Income Tax: Its History and Problems. Chicago: Public Administration Service, 1955.

MLA (9e ed.) Bronvermelding

Sigafoos, Robert Alan. The Municipal Income Tax: Its History and Problems. Public Administration Service, 1955.