Philippines. Bureau of Elementary Education. Special Education Division. (2005). Distance education modules for children with visual impairment. Special Education Division, Bureau of Elementary Education.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Philippines. Bureau of Elementary Education. Special Education Division. Distance Education Modules for Children with Visual Impairment. Pasig City: Special Education Division, Bureau of Elementary Education, 2005.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Philippines. Bureau of Elementary Education. Special Education Division. Distance Education Modules for Children with Visual Impairment. Special Education Division, Bureau of Elementary Education, 2005.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.