APA (7th ed.) Citation

Stewart, M. B., & Wallis, K. F. (1981). Introductory econometrics (2. ed.). Blackwell.

Chicago Style (17th ed.) Citation

Stewart, Mark B., and Kenneth Frank Wallis. Introductory Econometrics. 2. ed. Oxford: Blackwell, 1981.

MLA (9th ed.) Citation

Stewart, Mark B., and Kenneth Frank Wallis. Introductory Econometrics. 2. ed. Blackwell, 1981.