Willis, D. (2002). Question book to accompany Introductory accounting. McGraw-Hill.
Chicago Style (17. basım) AtıfWillis, David. Question Book to Accompany Introductory Accounting. Roseville, N.S.W.: McGraw-Hill, 2002.
MLA (8th ed.) AtıfWillis, David. Question Book to Accompany Introductory Accounting. McGraw-Hill, 2002.
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