Cita APA (7a ed.)

Santos, T. O., & Villa, R. K. (2012). Philippine history and government. New Horizon Publications.

Cita Chicago Style (17a ed.)

Santos, Teresita O., y Ramona K. Villa. Philippine History and Government. Quezon City, Metro Manila: New Horizon Publications, 2012.

Cita MLA (9a ed.)

Santos, Teresita O., y Ramona K. Villa. Philippine History and Government. New Horizon Publications, 2012.