edited by: John Halligan and Chris Paris

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 Buku Teks

Barlow, I.M.

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 Buku Teks

edited by William J. Murin

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 Buku Teks

Dushkin/McGraw-Hill , 1999

 Buku Teks

Simanjuntak, Megawati

Management Research Center (MRC) Department of Management, Faculty of Economics, University of Indonesia and Philip Kotler Center, 2014

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