APA (7e ed.) Bronvermelding

American Society of Planning Officials & Pickford, J. H. (1961). Principles of organization for planning agencies. s.n.

Chicago (17e ed.) Bronvermelding

American Society of Planning Officials en James H. Pickford. Principles of Organization for Planning Agencies. Chicago: s.n, 1961.

MLA (9e ed.) Bronvermelding

American Society of Planning Officials en James H. Pickford. Principles of Organization for Planning Agencies. s.n, 1961.