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Journal of Economic Research Volume 17 No 1 May 2012 (Rak 6 - L : Ekonomi, Akuntansi & Bisnis)
Journal of Economic Research, Vol. 18 No. 1, May 31, 2013 (Rak 6-L : Ekonomi, Akutansi & Bisnis)
Journal of Economic Research Volume 13 No 2 November 2008 (Rak 6 - L : Ekonomi, Akuntansi & Bisnis)
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