APA (7th ed.) Citation

Remmert, R., & Burckel, R. B. (1991). Theory of complex functions. Springer.

Chicago Style (17th ed.) Citation

Remmert, R., and Roberto B. Burckel. Theory of Complex Functions. New York [etc.]: Springer, 1991.

MLA (9th ed.) Citation

Remmert, R., and Roberto B. Burckel. Theory of Complex Functions. Springer, 1991.