Sayoto, Cristina E. (2002) Factors related to the cognitive levels and learning difficulties in Chemistry I of freshmen students at selected Higher Education Institutions in CALABARZON. Dissertation thesis, De La Salle University - Dasmariñas.

Sayoto, Cristina E. (1995) Relationship of instructional approach to academic performance in Chemistry I of the first year students of De La Salle University-Aguinaldo School Year 1992-1993 and 1993-1994. Masters thesis, De La Salle University - Dasmariñas.