Pagsanjan-Estrera, I. (2003). Drug use lower in public than private schools: Drug testing concluded in Metro Manila schools. Philippine Collegian.
Chicago Style (17th ed.) CitationPagsanjan-Estrera, Iris. "Drug Use Lower in Public than Private Schools: Drug Testing Concluded in Metro Manila Schools." Philippine Collegian 2003.
MLA (9th ed.) CitationPagsanjan-Estrera, Iris. "Drug Use Lower in Public than Private Schools: Drug Testing Concluded in Metro Manila Schools." Philippine Collegian, 2003.
Warning: These citations may not always be 100% accurate.