APA (7th ed.) Citation

Ahlfors, L. V., & Sario, L. (1960). Riemann surfaces. Princeton University.

Chicago Style (17th ed.) Citation

Ahlfors, Lars V., and Leo Sario. Riemann Surfaces. Princeton: Princeton University, 1960.

MLA (9th ed.) Citation

Ahlfors, Lars V., and Leo Sario. Riemann Surfaces. Princeton University, 1960.