Cita APA

Romualdez, E. Z., Yoingco, A. Q., & Casem, A. O., Jr. (1970). Philippine tax system. GIC Enterprises.

Citación estilo Chicago

Romualdez, Eduardo Z., Angel Q. Yoingco, and Antonio O. Casem, Jr. Philippine Tax System. Manila: GIC Enterprises, 1970.

Cita MLA

Romualdez, Eduardo Z., et al. Philippine Tax System. GIC Enterprises, 1970.