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Gaya APA

Indrajit, R, E. (2014). Konsep dan Strategi Keamanan Informasi di Dunia Cyber . Yogyakarta: Graha Ilmu.

Gaya MLA

Indrajit, Richardus, Eko. "Konsep dan Strategi Keamanan Informasi di Dunia Cyber". Yogyakarta: Graha Ilmu, 2014. Text.