توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

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.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

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.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

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.