Gaya APA

Levin, R, I., Rubin, D, S. (1994). Statistics for management (6th ed). Englewood Cliffs, NJ: Prentice Hall.

Gaya MLA

Levin, Richard, I.., Rubin, David, S.. "Statistics for management". 6th ed Englewood Cliffs, NJ: Prentice Hall, 1994. Text.