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Gaya APA

Kopindo, S, P. (1982). Apakah Koperasi Itu (Pertanyaan Dan Jawaban) . Indonesia: PT Karya Unipres.

Gaya MLA

Kopindo, Seri, Pustaka. "Apakah Koperasi Itu (Pertanyaan Dan Jawaban)". Indonesia: PT Karya Unipres, 1982. Text.