Said, N. F. (2012). Effectiveness of sulfur-coated and uncoated urea fertilizers as nitrogen sources for rice.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Said, Nur Fazlina. Effectiveness of Sulfur-coated and Uncoated Urea Fertilizers as Nitrogen Sources for Rice. 2012.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Said, Nur Fazlina. Effectiveness of Sulfur-coated and Uncoated Urea Fertilizers as Nitrogen Sources for Rice. 2012.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.