APA (7th ed.) Citation

Ellis, R., & Gulick, D. (1991). Calculus: One and several variables. Harcourt Brace Jovanovich.

Chicago Style (17th ed.) Citation

Ellis, Robert, and Denny Gulick. Calculus: One and Several Variables. San Diego u.a: Harcourt Brace Jovanovich, 1991.

MLA (9th ed.) Citation

Ellis, Robert, and Denny Gulick. Calculus: One and Several Variables. Harcourt Brace Jovanovich, 1991.