Gaya APA

Wichern, R, A, J, D, W. (2007). Applied multivariate statistical analysis (Sixth edition). New Jersey: Pearson Prentice Hall.

Gaya MLA

Wichern, Richard, A., Johnson,, Dean, W.. "Applied multivariate statistical analysis". Sixth edition New Jersey: Pearson Prentice Hall, 2007. Electronic Resource.