APA (7e ed.) Bronvermelding

Tongko, P. L. (1988). The Philippine government (rev. ed.). National Book Store.

Chicago (17e ed.) Bronvermelding

Tongko, Primo L. The Philippine Government. rev. ed. Metro Manila: National Book Store, 1988.

MLA (9e ed.) Bronvermelding

Tongko, Primo L. The Philippine Government. rev. ed. National Book Store, 1988.