APA (7th ed.) Citation

Pennisi, L., L., Gordon, L. I., & Lasher, S. (1976). Elements of complex variables (Second edition.). National Book Store.

Chicago Style (17th ed.) Citation

Pennisi, Louis, L., Louis I. Gordon, and Sim Lasher. Elements of Complex Variables. Second edition. Manila: National Book Store, 1976.

MLA (9th ed.) Citation

Pennisi, Louis, L., et al. Elements of Complex Variables. Second edition. National Book Store, 1976.