APA (7th ed.) Citation

Decker, H. W. (1968). Modern French: First course (2nd ed.). American Book.

Chicago Style (17th ed.) Citation

Decker, Henry Wallace. Modern French: First Course. 2nd ed. New York: American Book, 1968.

MLA (9th ed.) Citation

Decker, Henry Wallace. Modern French: First Course. 2nd ed. American Book, 1968.