Cita APA (7a ed.)
Hart, W. J. (1966). A systems approach to park planning. IUCN.
Cita Chicago Style (17a ed.)
Hart, William J. A Systems Approach to Park Planning. Morges: IUCN, 1966.
Cita MLA (9a ed.)
Hart, William J. A Systems Approach to Park Planning. IUCN, 1966.
Precaución: Estas citas no son 100% exactas.