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Gaya APA

Hartoko, A. (2013). Oceanographic Characters and Plankton Resources of Indonesia . Yogyakarta: Yogyakarta: Graha Ilmu.

Gaya MLA

Hartoko, Agus. "Oceanographic Characters and Plankton Resources of Indonesia". Yogyakarta: Yogyakarta: Graha Ilmu, 2013. Text.