Não informado. (1986). Abstracts on Rural Development in the Tropics. Royal Tropical Institute.
Chicago-referens (17:e uppl.)Não informado. Abstracts on Rural Development in the Tropics. Amsterdam: Royal Tropical Institute, 1986.
MLA-referens (8:e uppl.)Não informado. Abstracts on Rural Development in the Tropics. Royal Tropical Institute, 1986.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.