WILLIS, T. H. (1983). Workbook Study Guide To Accompany Statistics For Business And Economics T. Hillman Willis. Business Publications.
Chicago-viite (17. p.)WILLIS, T. Hillman. Workbook Study Guide To Accompany Statistics For Business And Economics T. Hillman Willis. Business Publications, 1983.
MLA-viite (8. p.)WILLIS, T. Hillman. Workbook Study Guide To Accompany Statistics For Business And Economics T. Hillman Willis. Business Publications, 1983.
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