APA (7th ed.) Citation

Ople, B. F. (2001). Citizen of the world. Institute for Public Policy.

Chicago Style (17th ed.) Citation

Ople, Blas F. Citizen of the World. Diliman, Quezon City: Institute for Public Policy, 2001.

MLA (9th ed.) Citation

Ople, Blas F. Citizen of the World. Institute for Public Policy, 2001.