Caballero, J. G., & Limjap, A. A. (2005). An analysis of the quality of problems posed by students in trigonometry. Tanglaw: official journal of the College of Education.
Chicago-viite (17. p.)Caballero, Jaime G., ja Auxencia A. Limjap. "An Analysis of the Quality of Problems Posed by Students in Trigonometry." Tanglaw: Official Journal of the College of Education 2005.
MLA-viite (9. p.)Caballero, Jaime G., ja Auxencia A. Limjap. "An Analysis of the Quality of Problems Posed by Students in Trigonometry." Tanglaw: Official Journal of the College of Education, 2005.
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