De La Sierra, E. A. (1999). A study on the relationship between co-curricular and grades among fourth year students of San Jose National High School S.Y. 1998-1999.
Chicago Style (17th ed.) CitationDe La Sierra, Elvira A. A Study on the Relationship Between Co-curricular and Grades Among Fourth Year Students of San Jose National High School S.Y. 1998-1999. 1999.
MLA (9th ed.) CitationDe La Sierra, Elvira A. A Study on the Relationship Between Co-curricular and Grades Among Fourth Year Students of San Jose National High School S.Y. 1998-1999. 1999.
Warning: These citations may not always be 100% accurate.