Gaya APA

Jonathan, S., Tambunan, S, P. (2007). Launching for marketer and entrepreneur (Cet. 1). Jakarta: Penerbit PT Gramedia.

Gaya MLA

Jonathan, Simon., Tambunan, Saul, Poltak. "Launching for marketer and entrepreneur". Cet. 1 Jakarta: Penerbit PT Gramedia, 2007. Text.