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Gaya APA

Sitinjak, T, J. (2013). Riset Operasi Untuk Pengambilan Keputusan Manajerial dengan Aplikasi Excel . Yogyakarta: Graha Ilmu.

Gaya MLA

Sitinjak, Tumpal, JR. "Riset Operasi Untuk Pengambilan Keputusan Manajerial dengan Aplikasi Excel". Yogyakarta: Graha Ilmu, 2013. Text.