Philippines. University. College of Agriculture. (1968). Summaries of studies in agricultural education in the Philippines: 1930-1959. College of Agriculture, University of the Philippines.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Philippines. University. College of Agriculture. Summaries of Studies in Agricultural Education in the Philippines: 1930-1959. SaLaguna: College of Agriculture, University of the Philippines, 1968.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Philippines. University. College of Agriculture. Summaries of Studies in Agricultural Education in the Philippines: 1930-1959. College of Agriculture, University of the Philippines, 1968.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.