APA
Ritual B. Y. &. S. R. M., . (2005). Etress Factors: Its Effect to the Performance in Chemistry of Third Year Students at Ditumabo National High School. Aurora: ASCOT.
Chicago
Ritual Bernadeth Y & Salamera Riza M, . 2005. Etress Factors: Its Effect to the Performance in Chemistry of Third Year Students at Ditumabo National High School. Aurora: ASCOT.
Harvard
Ritual B. Y. &. S. R. M., . (2005). Etress Factors: Its Effect to the Performance in Chemistry of Third Year Students at Ditumabo National High School. Aurora: ASCOT.
MLA
Ritual Bernadeth Y & Salamera Riza M, . Etress Factors: Its Effect to the Performance in Chemistry of Third Year Students at Ditumabo National High School. Aurora: ASCOT. 2005.