Gaya APA

Port, M. (2013). Book yourself solid : The fastest, easiest, and most rebiable system for getting more clients than you can handle even if you hate marketing and selling . hobokken: John Wiley and Sons, Inc.

Gaya MLA

Port, Michael. "Book yourself solid : The fastest, easiest, and most rebiable system for getting more clients than you can handle even if you hate marketing and selling". hobokken: John Wiley and Sons, Inc, 2013. Text.