Freund, J. E., Williams, F. J., & Perles, B. M. (1988). Elementary business statistics: The modern approach (Fifth edition.). Prentice Hall Inc.
Citazione stile Chigago Style (17a edizione)Freund, John E., Frank J. Williams, e Benjamin M. Perles. Elementary Business Statistics: The Modern Approach. Fifth edition. New Jersey: Prentice Hall Inc, 1988.
Citatione MLA (9a ed.)Freund, John E., et al. Elementary Business Statistics: The Modern Approach. Fifth edition. Prentice Hall Inc, 1988.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.