Não informado. (1968). Tropical agriculture research series. Ministry of Agriculture, Forestry and Fisheries, Tropical Agriculture Research Center.
Chicago-referens (17:e uppl.)Não informado. Tropical Agriculture Research Series. Tokyo: Ministry of Agriculture, Forestry and Fisheries, Tropical Agriculture Research Center, 1968.
MLA-referens (8:e uppl.)Não informado. Tropical Agriculture Research Series. Ministry of Agriculture, Forestry and Fisheries, Tropical Agriculture Research Center, 1968.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.