National Food and Agriculture Council, Philippines (Republic) National Economic Council, United States. Agency for International Development, & Seminar-Workshop on Maximizing the Benefits from Fertilizer Applications for Agricultural Crops (1970 : Quezon City). (1970). Proceedings [of a] Seminar-Workshop on Soils and Fertilizers. NFAC.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)National Food and Agriculture Council, Philippines (Republic) National Economic Council, United States. Agency for International Development, و Seminar-Workshop on Maximizing the Benefits from Fertilizer Applications for Agricultural Crops (1970 : Quezon City). Proceedings [of a] Seminar-Workshop on Soils and Fertilizers. [Quezon City]: NFAC, 1970.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)National Food and Agriculture Council, et al. Proceedings [of a] Seminar-Workshop on Soils and Fertilizers. NFAC, 1970.