APA (7th ed.) Citation

Forder, H. G. (1960). The Calculus of extension. Chelsea Publishing Company.

Chicago Style (17th ed.) Citation

Forder, Henry George. The Calculus of Extension. New York: Chelsea Publishing Company, 1960.

MLA (9th ed.) Citation

Forder, Henry George. The Calculus of Extension. Chelsea Publishing Company, 1960.