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Wahyudi, Sandy. (2016). Stupid Marketing: "Only Stupid Marketers Keep Learning" (cet 3). Jakarta: Gramedia Pustaka Utama.

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Wahyudi, Sandy. Stupid Marketing: "Only Stupid Marketers Keep Learning". cet 3 Jakarta: Gramedia Pustaka Utama, 2016. Text.

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Wahyudi, Sandy. Stupid Marketing: "Only Stupid Marketers Keep Learning". cet 3 Jakarta: Gramedia Pustaka Utama, 2016. Text.

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Wahyudi, Sandy. Stupid Marketing: "Only Stupid Marketers Keep Learning". cet 3 Jakarta: Gramedia Pustaka Utama, 2016. Print.