APA (7th ed.) Citation

Cajori, F. (1904). An introduction to the modern theory of equations. The Macmillan.

Chicago Style (17th ed.) Citation

Cajori, Florian. An Introduction to the Modern Theory of Equations. New York, London: The Macmillan, 1904.

MLA (9th ed.) Citation

Cajori, Florian. An Introduction to the Modern Theory of Equations. The Macmillan, 1904.