Ong, G. O. S. (2014). Evaluation on soil quality under community based agroforestry system - a case study on soil's under homegarden practices at Sabal Kruin village.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ong, Gabriel Ooi Seng. Evaluation on Soil Quality Under Community Based Agroforestry System - a Case Study on Soil's Under Homegarden Practices at Sabal Kruin Village. 2014.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Ong, Gabriel Ooi Seng. Evaluation on Soil Quality Under Community Based Agroforestry System - a Case Study on Soil's Under Homegarden Practices at Sabal Kruin Village. 2014.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.