Omar, L. (2011). Reduction of ammonia loss through mixing urea with zeolite, peat soil water, and sago waste water.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Omar, Latifah. Reduction of Ammonia Loss Through Mixing Urea with Zeolite, Peat Soil Water, and Sago Waste Water. 2011.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Omar, Latifah. Reduction of Ammonia Loss Through Mixing Urea with Zeolite, Peat Soil Water, and Sago Waste Water. 2011.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.