Παραπομπή APA

Freund, J. E., Williams, F. J., & Perles, B. . M. (1933). Elementary business statistics: The modern approch/6th ed. Prentice Hall.

Παραπομπή Chicago Style

Freund, John. E., Frank. J. Williams, και Benjamin. M. Perles. Elementary Business Statistics: The Modern Approch/6th Ed. New Jercy: Prentice Hall, 1933.

Παραπομπή MLA

Freund, John. E., et al. Elementary Business Statistics: The Modern Approch/6th Ed. Prentice Hall, 1933.