APA (7e ed.) Bronvermelding

Baerwald, D. A. (1968). A survey of planning information in standard reference books. Council of Planning Librarians.

Chicago (17e ed.) Bronvermelding

Baerwald, Diane A. A Survey of Planning Information in Standard Reference Books. Monticello, Ill: Council of Planning Librarians, 1968.

MLA (9e ed.) Bronvermelding

Baerwald, Diane A. A Survey of Planning Information in Standard Reference Books. Council of Planning Librarians, 1968.