Gaya APA

Kroeber, D, W., Laforge, R, L. (1980). The Manager's Guide to Statistics and Quantitative Methods . United States of America: McGraw-Hill.

Gaya MLA

Kroeber, Donald, W.., Laforge, R., Lawrence. "The Manager's Guide to Statistics and Quantitative Methods". United States of America: McGraw-Hill, 1980. Text.