APA (7th ed.) Citation

Roa, A. G. The Philippine Constabulary: Its history, functions, and achievements.

Chicago Style (17th ed.) Citation

Roa, Arturo G. The Philippine Constabulary: Its History, Functions, and Achievements.

MLA (9th ed.) Citation

Roa, Arturo G. The Philippine Constabulary: Its History, Functions, and Achievements.

Warning: These citations may not always be 100% accurate.