APA (7th ed.) Citation

Schubert, H., & McCormack, T. J. (1917). Mathematical essays and recreations (4th ed.). The Open court publishing company.

Chicago Style (17th ed.) Citation

Schubert, Hermann, and Thomas J. McCormack. Mathematical Essays and Recreations. 4th ed. Chicago: The Open court publishing company, 1917.

MLA (9th ed.) Citation

Schubert, Hermann, and Thomas J. McCormack. Mathematical Essays and Recreations. 4th ed. The Open court publishing company, 1917.