Salcedo, R. N. (1977). A comparative study of the in-school and out-of-school farming programs in ten selected agricultural schools in the Philippines [microform]. Photoduplication Service,University of the Philippines Library.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Salcedo, Rodolfo Nacino. A Comparative Study of the In-school and Out-of-school Farming Programs in Ten Selected Agricultural Schools in the Philippines [microform]. Quezon City: Photoduplication Service,University of the Philippines Library, 1977.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Salcedo, Rodolfo Nacino. A Comparative Study of the In-school and Out-of-school Farming Programs in Ten Selected Agricultural Schools in the Philippines [microform]. Photoduplication Service,University of the Philippines Library, 1977.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.