APA (7e ed.) Bronvermelding

Physical Planning Strategy for the Philippines. (1973). Population and employment. s.n.].

Chicago (17e ed.) Bronvermelding

Physical Planning Strategy for the Philippines. Population and Employment. [Manila: s.n.], 1973.

MLA (9e ed.) Bronvermelding

Physical Planning Strategy for the Philippines. Population and Employment. s.n.], 1973.