Gaya APA

Levin, R, I., Rubin, J, S. (1992). Quantitative Approaches to Management (8th ed). Singapore: Mc Graw-Hill.

Gaya MLA

Levin, Richard, I.., Rubin, Joel, S.. "Quantitative Approaches to Management". 8th ed Singapore: Mc Graw-Hill, 1992. Text.