Carale, L. R., & Campo, P. C. (2003). Concept development in Filipino children: The circulatory system. National Institute for Science and Mathematics Education Development.
Chicago-viite (17. p.)Carale, Lourdes R., ja Pia C. Campo. Concept Development in Filipino Children: The Circulatory System. Diliman, Quezon City: National Institute for Science and Mathematics Education Development, 2003.
MLA-viite (9. p.)Carale, Lourdes R., ja Pia C. Campo. Concept Development in Filipino Children: The Circulatory System. National Institute for Science and Mathematics Education Development, 2003.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.