APA (7th ed.) Citation

Pennisi, L. L. (1976). Elements of complex variables (2nd ed.). Holt.

Chicago Style (17th ed.) Citation

Pennisi, Louis Legendre. Elements of Complex Variables. 2nd ed. New York: Holt, 1976.

MLA (9th ed.) Citation

Pennisi, Louis Legendre. Elements of Complex Variables. 2nd ed. Holt, 1976.