Gaya APA

Halligan, B., Shah, D. (2014). Inbound Marketing : Attract, Engage, and Delight Customers Online (Ed. Revisi dan Update edisi kedua). Canada: John Wiley & Sons, Inc..

Gaya MLA

Halligan, Brian., Shah, Dharmesh. "Inbound Marketing : Attract, Engage, and Delight Customers Online". Ed. Revisi dan Update edisi kedua Canada: John Wiley & Sons, Inc., 2014. Text.