United Nations Centre for Human Settlements. (1981). Development of rural settlements and growth areas. United Nations Centre for Human Settlements (Habitat).
Cita Chicago (17th ed.)United Nations Centre for Human Settlements. Development of Rural Settlements and Growth Areas. Nairobi, Kenya: United Nations Centre for Human Settlements (Habitat), 1981.
Cita MLA (9th ed.)United Nations Centre for Human Settlements. Development of Rural Settlements and Growth Areas. United Nations Centre for Human Settlements (Habitat), 1981.
Atenció: Aquestes cites poden no estar 100% correctes.