Philippines. Bureau of Elementary Education. Special Education Division. (1996). Resource materials for the community-based SPED program for the mentally retarded. Special Education Division, Bureau of Elementary Education, Department of Education, Culture and Sports.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Philippines. Bureau of Elementary Education. Special Education Division. Resource Materials for the Community-based SPED Program for the Mentally Retarded. Pasig City: Special Education Division, Bureau of Elementary Education, Department of Education, Culture and Sports, 1996.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Philippines. Bureau of Elementary Education. Special Education Division. Resource Materials for the Community-based SPED Program for the Mentally Retarded. Special Education Division, Bureau of Elementary Education, Department of Education, Culture and Sports, 1996.