Hair, J. F. J., Black, W. C., Babin, B. J., & Anderson, R. E. (2019). Multivariate Data Analysis (8th ed.). Cengage Learning India Pvt. Ltd.

Hair, Joseph F. Jr, William C. Black, Barry J. Babin, and Rolph E. Anderson. Multivariate Data Analysis. 8th ed. New Delhi: Cengage Learning India Pvt. Ltd, 2019.

Hair, Joseph F. Jr, et al. Multivariate Data Analysis. 8th ed. Cengage Learning India Pvt. Ltd, 2019.