Cita APA (7th ed.)

Costello, M. A. (1989). Levels of living and their geographic context: Northern Mindanao, 1960-1980. NEDA-PDPR Project.

Cita Chicago (17th ed.)

Costello, Michael A. Levels of Living and Their Geographic Context: Northern Mindanao, 1960-1980. [Pasig]: NEDA-PDPR Project, 1989.

Cita MLA (9th ed.)

Costello, Michael A. Levels of Living and Their Geographic Context: Northern Mindanao, 1960-1980. NEDA-PDPR Project, 1989.