Gaya APA

Eppen, G, D. et al (1979). QUANTITATIVE CONCEPTS FOR MANAGEMENT THIRD EDITION (Edisi 3). New Jersey: Prentice Hall International.

Gaya MLA

Eppen, Gary, D.. et al. "QUANTITATIVE CONCEPTS FOR MANAGEMENT THIRD EDITION". Edisi 3 New Jersey: Prentice Hall International, 1979. Text.