Duff, J. E., & James E. Duff and Paul Uhrina. (2006). Student Workbook and Activity Guide for Duffy's Collision Repair Fundamentals. Cengage Learning, Inc: Thomson.
Styl ChicagoDuff, James E., a James E. Duff and Paul Uhrina. Student Workbook and Activity Guide for Duffy's Collision Repair Fundamentals. Cengage Learning, Inc: Thomson, 2006.
Citace podle MLADuff, James E., a James E. Duff and Paul Uhrina. Student Workbook and Activity Guide for Duffy's Collision Repair Fundamentals. Cengage Learning, Inc: Thomson, 2006.
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