APA (7th ed.) Citation

Berenstein, C. A., & Gay, R. (1991). Complex variables: An introduction (1. print.). Springer.

Chicago Style (17th ed.) Citation

Berenstein, Carlos A., and Roger Gay. Complex Variables: An Introduction. 1. print. New York u. a: Springer, 1991.

MLA (9th ed.) Citation

Berenstein, Carlos A., and Roger Gay. Complex Variables: An Introduction. 1. print. Springer, 1991.