Gaya APA

Hair, J, J, F. et al (2019). Multivariate data analysis 8th ed (8th ed). : Cengage Learning EMEA, c.

Gaya MLA

Hair, Jr.,, Joseph, F.. et al. "Multivariate data analysis 8th ed". 8th ed : Cengage Learning EMEA, c, 2019. Buku Wajib.