APA (7th ed.) Citation

Underwood, B. J., & Spence, J. T. (1968). Elementary statistics (2d ed.). Appleton-Century-Crofts.

Chicago Style (17th ed.) Citation

Underwood, Benton J., and Janet T. Spence. Elementary Statistics. 2d ed. New York: Appleton-Century-Crofts, 1968.

MLA (9th ed.) Citation

Underwood, Benton J., and Janet T. Spence. Elementary Statistics. 2d ed. Appleton-Century-Crofts, 1968.