Cita APA (7th ed.)

Abilay, W. P. (1981). Biological constraints to high yields on some rice farms in Nueva Ecija, Philippines [microform]. Photoduplication Service. University of the Philippines Library.

Cita Chicago (17th ed.)

Abilay, Wenceslao P. Biological Constraints to High Yields on Some Rice Farms in Nueva Ecija, Philippines [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1981.

Cita MLA (9th ed.)

Abilay, Wenceslao P. Biological Constraints to High Yields on Some Rice Farms in Nueva Ecija, Philippines [microform]. Photoduplication Service. University of the Philippines Library, 1981.