BELL COLIN E. (1977). QUANTITATIVE METHODS FOR ADMINISTRATION. RICHARD D.IRWIN INC.
Lua i Stíl Chicago (17ú heag.)BELL COLIN E. QUANTITATIVE METHODS FOR ADMINISTRATION. ILLIONIS: RICHARD D.IRWIN INC, 1977.
Lua MLA (9ú heag.)BELL COLIN E. QUANTITATIVE METHODS FOR ADMINISTRATION. RICHARD D.IRWIN INC, 1977.
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