APA (7th ed.) Citation

Villegas, B. M., & Abola, V. A. (2004). Basic economics. Center for Research and Communication Foundation.

Chicago Style (17th ed.) Citation

Villegas, Bernardo Malvar, and Victor A. Abola. Basic Economics. Pasig City: Center for Research and Communication Foundation, 2004.

MLA (9th ed.) Citation

Villegas, Bernardo Malvar, and Victor A. Abola. Basic Economics. Center for Research and Communication Foundation, 2004.