Freund, J. E., Williams, F. J., & Perles, B. . M. (1933). Elementary business statistics: The modern approch/6th ed. Prentice Hall.
Dyfyniad Arddull ChicagoFreund, John. E., Frank. J. Williams, and Benjamin. M. Perles. Elementary Business Statistics: The Modern Approch/6th Ed. New Jercy: Prentice Hall, 1933.
Dyfyniad MLAFreund, John. E., et al. Elementary Business Statistics: The Modern Approch/6th Ed. Prentice Hall, 1933.
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