APA (7th ed.) Citation

Robbins, F. E., Karpinski, L. C., & Nicomachus Gerasenus ca. 2. Jh. (1926). Nicomachus of Gerasa: Introduction to arithmetic. Macmillan.

Chicago Style (17th ed.) Citation

Robbins, Frank Egleston, Louis Charles Karpinski, and Nicomachus Gerasenus ca. 2. Jh. Nicomachus of Gerasa: Introduction to Arithmetic. New York: Macmillan, 1926.

MLA (9th ed.) Citation

Robbins, Frank Egleston, et al. Nicomachus of Gerasa: Introduction to Arithmetic. Macmillan, 1926.