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Una,Syamsul.,dkk.. (2018). ECONOMIC ENGLISH INSTRUCTIONAL MATERIAL : Based On Shariah Economy System (Edisi 1 Cetakan-1). Yogyakarta: Deepublish.

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Una,Syamsul.,dkk.. ECONOMIC ENGLISH INSTRUCTIONAL MATERIAL : Based On Shariah Economy System. Edisi 1 Cetakan-1 Yogyakarta: Deepublish, 2018. Text.

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Una,Syamsul.,dkk.. ECONOMIC ENGLISH INSTRUCTIONAL MATERIAL : Based On Shariah Economy System. Edisi 1 Cetakan-1 Yogyakarta: Deepublish, 2018. Text.

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Una,Syamsul.,dkk.. ECONOMIC ENGLISH INSTRUCTIONAL MATERIAL : Based On Shariah Economy System. Edisi 1 Cetakan-1 Yogyakarta: Deepublish, 2018. Print.