Nong-Kim-Yen 1937. (1974). A study of farmers' attitude toward cooperatives in seelcted barrios of two municipalities in the province of Rizal.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Nong-Kim-Yen 1937. A Study of Farmers' Attitude Toward Cooperatives in Seelcted Barrios of Two Municipalities in the Province of Rizal. 1974.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Nong-Kim-Yen 1937. A Study of Farmers' Attitude Toward Cooperatives in Seelcted Barrios of Two Municipalities in the Province of Rizal. 1974.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.