Bell, G. 1. (1976). Strategies for human settlements: Habitat and environment. University Press of Hawaii.
Chicago-referens (17:e uppl.)Bell, Gwen 1934. Strategies for Human Settlements: Habitat and Environment. Honolulu: University Press of Hawaii, 1976.
MLA-referens (9:e uppl.)Bell, Gwen 1934. Strategies for Human Settlements: Habitat and Environment. University Press of Hawaii, 1976.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.