APA (7e ed.) Bronvermelding

Romero, E. C., & Rosero, E. V. (1992). International relations: A Philippine textbook in political science, economics, business, sociology and law. Ken.

Chicago (17e ed.) Bronvermelding

Romero, Ephraim C., en Edgar V. Rosero. International Relations: A Philippine Textbook in Political Science, Economics, Business, Sociology and Law. Quezon City: Ken, 1992.

MLA (9e ed.) Bronvermelding

Romero, Ephraim C., en Edgar V. Rosero. International Relations: A Philippine Textbook in Political Science, Economics, Business, Sociology and Law. Ken, 1992.