APA (7th ed.) Citation

Welkowitz, J., Ewen, R. B., & Cohen, J. (1991). Introductory statistics for the behavioral sciences / Joan Welkowitz, Robert B. Ewen and Jacob Cohen (4th ed.). Harcourt Brace Jovanovich.

Chicago Style (17th ed.) Citation

Welkowitz, Joan, Robert B. Ewen, and Jacob Cohen. Introductory Statistics for the Behavioral Sciences / Joan Welkowitz, Robert B. Ewen and Jacob Cohen. 4th ed. San Diego ; London: Harcourt Brace Jovanovich, 1991.

MLA (9th ed.) Citation

Welkowitz, Joan, et al. Introductory Statistics for the Behavioral Sciences / Joan Welkowitz, Robert B. Ewen and Jacob Cohen. 4th ed. Harcourt Brace Jovanovich, 1991.

Warning: These citations may not always be 100% accurate.