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Gaya APA

R, C, D., Novika, . (2008). English Conversations and Correspondence Secretaries (Cetakan XIII). Jakarta: Puspa Swara.

Gaya MLA

R, Cyssco, Dhanny., Novika, . "English Conversations and Correspondence Secretaries". Cetakan XIII Jakarta: Puspa Swara, 2008. Text.