APA (7th ed.) Citation

Brenke, W. C. (1914). Theory of Functions of a Complex Variable. The American mathematical monthly, 21(4), 118. https://doi.org/10.2307/2973586

Chicago Style (17th ed.) Citation

Brenke, W. C. "Theory of Functions of a Complex Variable." The American Mathematical Monthly 21, no. 4 (1914): 118. https://doi.org/10.2307/2973586.

MLA (9th ed.) Citation

Brenke, W. C. "Theory of Functions of a Complex Variable." The American Mathematical Monthly, vol. 21, no. 4, 1914, p. 118, https://doi.org/10.2307/2973586.