Gaya APA

Krajewski, L, J., Ritzman, L, P. (1990). OPERATIONS MANAGEMENT; Strategy and Analysis (2nd). New York: PEARSON ADDISON WESLEY.

Gaya MLA

Krajewski, Lee, J.., Ritzman, Larry, P.. "OPERATIONS MANAGEMENT; Strategy and Analysis". 2nd New York: PEARSON ADDISON WESLEY, 1990. Text.