Cita APA (7th ed.)
(1987). Environmental guidelines for settlements planning and management. UNCHS/UNEP.
Cita Chicago (17th ed.)
Environmental Guidelines for Settlements Planning and Management. Nairobi: UNCHS/UNEP, 1987.
Cita MLA (9th ed.)
Environmental Guidelines for Settlements Planning and Management. UNCHS/UNEP, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.