APA (7e ed.) Bronvermelding

Tabbal, D. F. (1977). The distribution of water supply and water adequacy within a gravity irrigation system [microform]. Photoduplication Service, University of the Philippines Library.

Chicago (17e ed.) Bronvermelding

Tabbal, Domingo Flores. The Distribution of Water Supply and Water Adequacy Within a Gravity Irrigation System [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1977.

MLA (9e ed.) Bronvermelding

Tabbal, Domingo Flores. The Distribution of Water Supply and Water Adequacy Within a Gravity Irrigation System [microform]. Photoduplication Service, University of the Philippines Library, 1977.