Abdullah, A. (2017). Nutrient composition of swiftlets (aerodramus fuciphagus) guano from the east coast economic region (ECER) of Malaysia and its potential as an organic fertilizer.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Abdullah, Azizon. Nutrient Composition of Swiftlets (aerodramus Fuciphagus) Guano from the East Coast Economic Region (ECER) of Malaysia and Its Potential as an Organic Fertilizer. 2017.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Abdullah, Azizon. Nutrient Composition of Swiftlets (aerodramus Fuciphagus) Guano from the East Coast Economic Region (ECER) of Malaysia and Its Potential as an Organic Fertilizer. 2017.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.