Citazione Stile APA (7a Edizione)

Freund, J. E., Williams, F. J., & Perles, B. M. (1993). Elementary business statistics: The modern approach (6th ed.). Prentice Hall.

Citazione stile Chigago Style (17a edizione)

Freund, John E., Frank Jefferson Williams, e Benjamin M. Perles. Elementary Business Statistics: The Modern Approach. 6th ed. Englewood Cliffs, N.J.: Prentice Hall, 1993.

Citatione MLA (9a ed.)

Freund, John E., et al. Elementary Business Statistics: The Modern Approach. 6th ed. Prentice Hall, 1993.