Supa-Udomlerk, B. (1977). Effects of nitrogen, phosphorus, and sulfur fertilization on growth, yield, and protein components of bush sitao (Vigna sesquipedalis Fruw) [microform]. Photoduplication Service. University of the Philippines Library.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Supa-Udomlerk, Boonrawd. Effects of Nitrogen, Phosphorus, and Sulfur Fertilization on Growth, Yield, and Protein Components of Bush Sitao (Vigna Sesquipedalis Fruw) [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1977.
Trích dẫn kiểu MLA (xuất bản lần thứ 9)Supa-Udomlerk, Boonrawd. Effects of Nitrogen, Phosphorus, and Sulfur Fertilization on Growth, Yield, and Protein Components of Bush Sitao (Vigna Sesquipedalis Fruw) [microform]. Photoduplication Service. University of the Philippines Library, 1977.