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Gaya APA

Siregar, T, H. (2008). Cokelat : Pembudidayaan Pengolahan Pemasaran . Jakarta: Jakarta:Penebar Swadaya.

Gaya MLA

Siregar, Tumpal, H.S. "Cokelat : Pembudidayaan Pengolahan Pemasaran". Jakarta: Jakarta:Penebar Swadaya, 2008. Text.