M. Forgiel. (1989). Problem Solver in Business, Acconting, and Finace (In lần thứ 1.). American: Research and Education Association.
Παραπομπή Chicago StyleM. Forgiel. Problem Solver in Business, Acconting, and Finace. In lần thứ 1. American: Research and Education Association, 1989.
Παραπομπή MLAM. Forgiel. Problem Solver in Business, Acconting, and Finace. In lần thứ 1. American: Research and Education Association, 1989.
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