Cita APA (7a ed.)

Hazelhoff, D. (1981). Introduction to physical planning at national level. Ministry of housing and physical planning.

Cita Chicago Style (17a ed.)

Hazelhoff, D. Introduction to Physical Planning at National Level. The Hague: Ministry of housing and physical planning, 1981.

Cita MLA (9a ed.)

Hazelhoff, D. Introduction to Physical Planning at National Level. Ministry of housing and physical planning, 1981.