Cita APA (7th ed.)

Development Academy of the Philippines. Human Settlements Program. (1975). A union catalog of development materials. [s.n.].

Cita Chicago (17th ed.)

Development Academy of the Philippines. Human Settlements Program. A Union Catalog of Development Materials. Quezon City: [s.n.], 1975.

Cita MLA (9th ed.)

Development Academy of the Philippines. Human Settlements Program. A Union Catalog of Development Materials. [s.n.], 1975.