LEFTWICH, R. H. (1984). Student's Workbook And Study Guide To Accompany A Basic Framework For Economics Ricard H. Letfwich; De Von L. Yoho. Business Publications.
Lua i Stíl Chicago (17ú heag.)LEFTWICH, Richard H. Student's Workbook And Study Guide To Accompany A Basic Framework For Economics Ricard H. Letfwich; De Von L. Yoho. Business Publications, 1984.
Lua MLA (8ú heag.)LEFTWICH, Richard H. Student's Workbook And Study Guide To Accompany A Basic Framework For Economics Ricard H. Letfwich; De Von L. Yoho. Business Publications, 1984.
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