Han, K. W. (1977). Sulfur availability to rice plants and its transfoemation in rice soil and rhizosphere [microform]. Photoduplication Service. University of the Philippines Library.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Han, Kang Wan. Sulfur Availability to Rice Plants and Its Transfoemation in Rice Soil and Rhizosphere [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1977.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Han, Kang Wan. Sulfur Availability to Rice Plants and Its Transfoemation in Rice Soil and Rhizosphere [microform]. Photoduplication Service. University of the Philippines Library, 1977.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.