Cita APA (7th ed.)
Commission on Landscape Planning. (1969). Landscape planning: A policy for an overcrowded world. IUCN.
Cita Chicago (17th ed.)
Commission on Landscape Planning. Landscape Planning: A Policy for an Overcrowded World. Morges: IUCN, 1969.
Cita MLA (9th ed.)
Commission on Landscape Planning. Landscape Planning: A Policy for an Overcrowded World. IUCN, 1969.
Atenció: Aquestes cites poden no estar 100% correctes.