APA (7th ed.) Citation

Ramirez, R. C. (2000). History of the PCSO. Philippine Graphic.

Chicago Style (17th ed.) Citation

Ramirez, Roger C. "History of the PCSO." Philippine Graphic 2000.

MLA (9th ed.) Citation

Ramirez, Roger C. "History of the PCSO." Philippine Graphic, 2000.

Warning: These citations may not always be 100% accurate.