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Harahap, Isn, Ridwan, M.. (2016). The handbook of islamic economics (Ed. 1). Medan: Febi Uinsu Press.

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Harahap, Isn, Ridwan, M.. The handbook of islamic economics. Ed. 1 Medan: Febi Uinsu Press, 2016. Text.

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Harahap, Isn, Ridwan, M.. The handbook of islamic economics. Ed. 1 Medan: Febi Uinsu Press, 2016. Text.

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Harahap, Isn, Ridwan, M.. The handbook of islamic economics. Ed. 1 Medan: Febi Uinsu Press, 2016. Print.