TACK ALFRED. (1981). EXECUTIVE DEVELOPMENT. WORLD`S WORK LTD.
Chicago-čujuhus (17. p.)TACK ALFRED. EXECUTIVE DEVELOPMENT. LONDON: WORLD`S WORK LTD, 1981.
MLA-čujuhus (9. p.)TACK ALFRED. EXECUTIVE DEVELOPMENT. WORLD`S WORK LTD, 1981.
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