Cita APA (7th ed.)

Development Academy of the Philippines. Human Settlements Program. (1977). Human settlements: Philippine frontier settlements models. Human Settlements Program.

Cita Chicago (17th ed.)

Development Academy of the Philippines. Human Settlements Program. Human Settlements: Philippine Frontier Settlements Models. Quezon City: Human Settlements Program, 1977.

Cita MLA (9th ed.)

Development Academy of the Philippines. Human Settlements Program. Human Settlements: Philippine Frontier Settlements Models. Human Settlements Program, 1977.