Philippines. Bureau of Elementary Education. Special Education Division. (2004). Basic learning competencies and teachers guide for the hearing impaired: Language : auditory training (Rev. ed.). Special Education Division, Bureau of Elementary Education.
Chicago-viite (17. p.)Philippines. Bureau of Elementary Education. Special Education Division. Basic Learning Competencies and Teachers Guide for the Hearing Impaired: Language : Auditory Training. Rev. ed. Pasig City: Special Education Division, Bureau of Elementary Education, 2004.
MLA-viite (9. p.)Philippines. Bureau of Elementary Education. Special Education Division. Basic Learning Competencies and Teachers Guide for the Hearing Impaired: Language : Auditory Training. Rev. ed. Special Education Division, Bureau of Elementary Education, 2004.