DUNCAN TOM. (1992). INSTRUCTOR`S MANUAL MARKETING. PRENTICE -HALL INTERNATIONAL; INC.
Chicago-čujuhus (17. p.)DUNCAN TOM. INSTRUCTOR`S MANUAL MARKETING. NEW JERSEY; U.S.A: PRENTICE -HALL INTERNATIONAL; INC, 1992.
MLA-čujuhus (9. p.)DUNCAN TOM. INSTRUCTOR`S MANUAL MARKETING. PRENTICE -HALL INTERNATIONAL; INC, 1992.
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