Vias, . S. (2002). Is your child hearing impaired? Health Today Philippines.
Cita Chicago (17th ed.)Vias, Shoba. "Is Your Child Hearing Impaired?" Health Today Philippines 2002.
Cita MLA (9th ed.)Vias, Shoba. "Is Your Child Hearing Impaired?" Health Today Philippines, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.