APA (7th ed.) Citation

Ahlfors, L. V., & Sario, L. (1971). Riemann surfaces (4. print.). Princeton Univ. Press.

Chicago Style (17th ed.) Citation

Ahlfors, Lars Valerian, and Leo Sario. Riemann Surfaces. 4. print. Princeton, NJ: Princeton Univ. Press, 1971.

MLA (9th ed.) Citation

Ahlfors, Lars Valerian, and Leo Sario. Riemann Surfaces. 4. print. Princeton Univ. Press, 1971.