Covar, P. R. The Masagana/Margate system of planting rice: A study of an agricultural innovation. Community Development Research Council, University of the Philippines.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Covar, Prospero R. The Masagana/Margate System of Planting Rice: A Study of an Agricultural Innovation. [Quezon City]: Community Development Research Council, University of the Philippines.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Covar, Prospero R. The Masagana/Margate System of Planting Rice: A Study of an Agricultural Innovation. Community Development Research Council, University of the Philippines.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.