Nguyen, E. L. (1979). The influence of weather on rice production [microform]. Photoduplication Service, University of the Philippines Library.
Chicago-referens (17:e uppl.)Nguyen, Elvira Liwag. The Influence of Weather on Rice Production [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1979.
MLA-referens (9:e uppl.)Nguyen, Elvira Liwag. The Influence of Weather on Rice Production [microform]. Photoduplication Service, University of the Philippines Library, 1979.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.