APA (7th ed.) Citation

Goursat, E., Hedrick, E. R., & Dunkel, O. (1959). Functions of a complex variable. Dover.

Chicago Style (17th ed.) Citation

Goursat, Edouard, Earle Raymond Hedrick, and Otto Dunkel. Functions of a Complex Variable. New York: Dover, 1959.

MLA (9th ed.) Citation

Goursat, Edouard, et al. Functions of a Complex Variable. Dover, 1959.