Baerwald, D. A. (1968). A survey of planning information in standard reference books. Council of Planning Librarians.
Citazione stile Chigago Style (17a edizione)Baerwald, Diane A. A Survey of Planning Information in Standard Reference Books. Monticello, Ill: Council of Planning Librarians, 1968.
Citatione MLA (9a ed.)Baerwald, Diane A. A Survey of Planning Information in Standard Reference Books. Council of Planning Librarians, 1968.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.