Citazione Stile APA (7a Edizione)

Freund, J. E., & Perles, B. M. (2007). Modern elementary statistics (Twelfth edition.). Pearson Prentice Hall.

Citazione stile Chigago Style (17a edizione)

Freund, John E., e Benjamin M. Perles. Modern Elementary Statistics. Twelfth edition. Upper Saddle River, N.J: Pearson Prentice Hall, 2007.

Citatione MLA (9a ed.)

Freund, John E., e Benjamin M. Perles. Modern Elementary Statistics. Twelfth edition. Pearson Prentice Hall, 2007.