APA (7th ed.) Citation

Philippines. Human Settlements Commission. (1977). Regional profile: Region I. HSC.

Chicago Style (17th ed.) Citation

Philippines. Human Settlements Commission. Regional Profile: Region I. Makati, Metro Manila: HSC, 1977.

MLA (9th ed.) Citation

Philippines. Human Settlements Commission. Regional Profile: Region I. HSC, 1977.

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