Sigafoos, R. A. (1955). The municipal income tax: Its history and problems. Public Administration Service.
Citazione stile Chigago Style (17a edizione)Sigafoos, Robert Alan. The Municipal Income Tax: Its History and Problems. Chicago: Public Administration Service, 1955.
Citatione MLA (9a ed.)Sigafoos, Robert Alan. The Municipal Income Tax: Its History and Problems. Public Administration Service, 1955.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.