Cita APA (7th ed.)

Alfiler, M. C. P. (1999). Philippine administrative system. University of the Philippines Open University.

Cita Chicago (17th ed.)

Alfiler, Ma. Concepcion P. Philippine Administrative System. Quezon City: University of the Philippines Open University, 1999.

Cita MLA (9th ed.)

Alfiler, Ma. Concepcion P. Philippine Administrative System. University of the Philippines Open University, 1999.