University of the Philippines (Diliman). Institute for Science and Mathematics Education Development. (1990). Sugar from cane. Institute for Science and Mathematics Education Development.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)University of the Philippines (Diliman). Institute for Science and Mathematics Education Development. Sugar from Cane. Quezon City: Institute for Science and Mathematics Education Development, 1990.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)University of the Philippines (Diliman). Institute for Science and Mathematics Education Development. Sugar from Cane. Institute for Science and Mathematics Education Development, 1990.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.