Não informado. (1979). Annals of Tropical Research. Visayas State College of Agriculture.
Chicago-referens (17:e uppl.)Não informado. Annals of Tropical Research. Baybay Leyte, Filipinas: Visayas State College of Agriculture, 1979.
MLA-referens (8:e uppl.)Não informado. Annals of Tropical Research. Visayas State College of Agriculture, 1979.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.