Tropical Agricultural Research | Postgraduate Institute of Agriculture, University of Peradeniya. Cambridge University Press.
Chicago-referens (17:e uppl.)Tropical Agricultural Research | Postgraduate Institute of Agriculture, University of Peradeniya. Cambridge University Press.
MLA-referens (8:e uppl.)Tropical Agricultural Research | Postgraduate Institute of Agriculture, University of Peradeniya. Cambridge University Press.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.