APA (7th ed.) Citation

Pacis, V. A. (1971). President Sergio Osmena: A fully-documented biography. Philippine Constitution Association.

Chicago Style (17th ed.) Citation

Pacis, Vicente Albano. President Sergio Osmena: A Fully-documented Biography. [Manila?]: Philippine Constitution Association, 1971.

MLA (9th ed.) Citation

Pacis, Vicente Albano. President Sergio Osmena: A Fully-documented Biography. Philippine Constitution Association, 1971.