APA (7th ed.) Citation

De Ocampo, E. A., & Saulo, A. B. (1978). First Filipino diplomat: Felipe Agoncillo, 1859-1941. National Historical Institute.

Chicago Style (17th ed.) Citation

De Ocampo, Esteban Arotomas, and Alfredo B. Saulo. First Filipino Diplomat: Felipe Agoncillo, 1859-1941. Manila: National Historical Institute, 1978.

MLA (9th ed.) Citation

De Ocampo, Esteban Arotomas, and Alfredo B. Saulo. First Filipino Diplomat: Felipe Agoncillo, 1859-1941. National Historical Institute, 1978.