Cita APA (7th ed.)

Philippine Deaf Resource Center & Philippine Federation of the Deaf. (2004). An Introduction to Filipino sign language. Philippine Deaf Resource Center.

Cita Chicago (17th ed.)

Philippine Deaf Resource Center i Philippine Federation of the Deaf. An Introduction to Filipino Sign Language. Quezon City: Philippine Deaf Resource Center, 2004.

Cita MLA (9th ed.)

Philippine Deaf Resource Center i Philippine Federation of the Deaf. An Introduction to Filipino Sign Language. Philippine Deaf Resource Center, 2004.