1. mengukur kepuasan pelanggan by Gerson,Richard F. Publication: Johor Bahru Pelangi . 151ms. , - 21cm Availability: No items available: Withdrawn (1),

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2. Menulis dan melaksanakan pelan pemasaran by Gerson,Richard F. Publication: Johor Bahru Pelangi 2002 . 121ms. , - 22cm Date:2002 Availability: Copies available: PERPUSTAKAAN AWAM LABUAN (1),

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3. Beyond Customer Service by Gerson, Richard F. Publication: Boston Thomson 1992 . 108p. , - 25cm. Date:1992 Availability: No items available: Withdrawn (1),

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