Giffin, W. C. (1971). Introduction to operations engineering. Richard D. Irwin, Inc.
Chicago Style (17. basım) AtıfGiffin, Walter C. Introduction to Operations Engineering. Homewood, Illinois: Richard D. Irwin, Inc, 1971.
MLA (9th ed.) AtıfGiffin, Walter C. Introduction to Operations Engineering. Richard D. Irwin, Inc, 1971.
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