APA (7e ed.) Bronvermelding

Hammer, G. S. . A. (1969). Comprehensive planning assistance in the small community. United States Government Printing Office.

Chicago (17e ed.) Bronvermelding

Hammer, Greene Siler Associates. Comprehensive Planning Assistance in the Small Community. Washington: United States Government Printing Office, 1969.

MLA (9e ed.) Bronvermelding

Hammer, Greene Siler Associates. Comprehensive Planning Assistance in the Small Community. United States Government Printing Office, 1969.