APA (7th ed.) Citation

(1961). Unisan, Quezon, Philippines. Board of Technical Surveys and Maps.

Chicago Style (17th ed.) Citation

Unisan, Quezon, Philippines. Manial: Board of Technical Surveys and Maps, 1961.

MLA (9th ed.) Citation

Unisan, Quezon, Philippines. Board of Technical Surveys and Maps, 1961.

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