Williams, P. D. Filipino children's concepts of body organs and illnesses. NSTA-UPS Integrated Research Program,University of the Philippines.
Chicago Style (17. basım) AtıfWilliams, Phoebe D. Filipino Children's Concepts of Body Organs and Illnesses. Quezon City: NSTA-UPS Integrated Research Program,University of the Philippines.
MLA (9th ed.) AtıfWilliams, Phoebe D. Filipino Children's Concepts of Body Organs and Illnesses. NSTA-UPS Integrated Research Program,University of the Philippines.
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