Gaya APA

Goeldner, C, R., Ritchie, J, B. (2006). Tourism : principles, practices, philosophies (10th ed.). New Jersey: John Wiley & Sons, Inc..

Gaya MLA

Goeldner, Charles, R.., Ritchie, J.R., Brent. "Tourism : principles, practices, philosophies". 10th ed. New Jersey: John Wiley & Sons, Inc., 2006. BUKU.