Gonzales, F. H., & Guzman, R. D. (1974). Soybean production and marketing in Northern Luzon. Marketing Research Unit, National Food and Agriculture Council, Dept. of Agriculture and Natural Resources.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Gonzales, F. H., و R. D. Guzman. Soybean Production and Marketing in Northern Luzon. [Quezon City: Marketing Research Unit, National Food and Agriculture Council, Dept. of Agriculture and Natural Resources, 1974.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Gonzales, F. H., و R. D. Guzman. Soybean Production and Marketing in Northern Luzon. Marketing Research Unit, National Food and Agriculture Council, Dept. of Agriculture and Natural Resources, 1974.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.