Guevarra, M. C. (2000). PETROS guards, may kaltas na naman sa sahod. Philippine Collegian.
Cita Chicago (17th ed.)Guevarra, Ma. Cristina. "PETROS Guards, May Kaltas Na Naman Sa Sahod." Philippine Collegian 2000.
Cita MLA (9th ed.)Guevarra, Ma. Cristina. "PETROS Guards, May Kaltas Na Naman Sa Sahod." Philippine Collegian, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.