APA (7th ed.) Citation

Mathews, G. B. (1900). Theory of numbers (2nd ed.). Chelsea.

Chicago Style (17th ed.) Citation

Mathews, G. B. Theory of Numbers. 2nd ed. New York, N.Y.: Chelsea, 1900.

MLA (9th ed.) Citation

Mathews, G. B. Theory of Numbers. 2nd ed. Chelsea, 1900.