Baerwald, D. A. (1968). A survey of planning information in standard reference books. Council of Planning Librarians.
Lua i Stíl Chicago (17ú heag.)Baerwald, Diane A. A Survey of Planning Information in Standard Reference Books. Monticello, Ill: Council of Planning Librarians, 1968.
Lua MLA (9ú heag.)Baerwald, Diane A. A Survey of Planning Information in Standard Reference Books. Council of Planning Librarians, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.