APA (7th ed.) Citation

Krapp, G. P. (1909). Modern English, its growth and present use. C. Scribner's sons.

Chicago Style (17th ed.) Citation

Krapp, George Philip. Modern English, Its Growth and Present Use. New York: C. Scribner's sons, 1909.

MLA (9th ed.) Citation

Krapp, George Philip. Modern English, Its Growth and Present Use. C. Scribner's sons, 1909.