APA (7th ed.) Citation

Wallis, K. F. (1973). Introductory econometrics (Rev. ed.). Gray-Mills.

Chicago Style (17th ed.) Citation

Wallis, Kenneth Frank. Introductory Econometrics. Rev. ed. London: Gray-Mills, 1973.

MLA (9th ed.) Citation

Wallis, Kenneth Frank. Introductory Econometrics. Rev. ed. Gray-Mills, 1973.