Gaya APA

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The Power of Concentratio : Rahasia Terbesar Kekuatan Konsentrasi. (2017). Jakarta,: Bright Publisher.

Gaya MLA

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The Power of Concentratio : Rahasia Terbesar Kekuatan Konsentrasi. cet 1-. Jakarta,: Bright Publisher, 2017. Buku Teks.