APA (7th ed.) Citation

Steinmann, M., & Keller, M. (1999). Good grammar made easy. Gramercy Books.

Chicago Style (17th ed.) Citation

Steinmann, Martin, and Michael Keller. Good Grammar Made Easy. New York: Gramercy Books, 1999.

MLA (9th ed.) Citation

Steinmann, Martin, and Michael Keller. Good Grammar Made Easy. Gramercy Books, 1999.