Cita APA (7th ed.)

Apthorpe, R. (1973). Development indicators. Cooperative Regional Development Project, National Development Research Center.

Cita Chicago (17th ed.)

Apthorpe, Raymond. Development Indicators. Quezon City: Cooperative Regional Development Project, National Development Research Center, 1973.

Cita MLA (9th ed.)

Apthorpe, Raymond. Development Indicators. Cooperative Regional Development Project, National Development Research Center, 1973.