Bautista, O. K. (1977). The effects of N, K, and CA on the growth yield and quality fo snap cowpea [microform]. Photoduplication Service, University of the Philippines Library.
Cita Chicago (17th ed.)Bautista, Ofelia Karganilla. The Effects of N, K, and CA on the Growth Yield and Quality Fo Snap Cowpea [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1977.
Cita MLA (9th ed.)Bautista, Ofelia Karganilla. The Effects of N, K, and CA on the Growth Yield and Quality Fo Snap Cowpea [microform]. Photoduplication Service, University of the Philippines Library, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.