Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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