Gaya APA

DILWORTH, J, B., ETTKIN, L, P. (1989). STUDY GUIDE FOR PRODUCTION AND OPERATIONS MANAGEMENT (4TH ED). New York: RANDOM HOUSE.

Gaya MLA

DILWORTH, JAMES, B.., ETTKIN, LAWRENCE, P.. "STUDY GUIDE FOR PRODUCTION AND OPERATIONS MANAGEMENT". 4TH ED New York: RANDOM HOUSE, 1989. Textbook.