Development Academy of the Philippines. Human Settlements Program. (1977). Human settlements: Philippine frontier settlements models. Human Settlements Program.
Citazione stile Chigago Style (17a edizione)Development Academy of the Philippines. Human Settlements Program. Human Settlements: Philippine Frontier Settlements Models. Quezon City: Human Settlements Program, 1977.
Citatione MLA (9a ed.)Development Academy of the Philippines. Human Settlements Program. Human Settlements: Philippine Frontier Settlements Models. Human Settlements Program, 1977.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.