APA-viite (7. p.)
ebrary, Inc, Moore, D. P., & Doherty, A. G. (2011). United States travel and tourism industry. Nova Science Publishers, Inc..
Chicago-viite (17. p.)
ebrary, Inc, Danielle P. Moore, ja Allison G. Doherty. United States Travel and Tourism Industry. Hauppauge, N.Y.: Nova Science Publishers, Inc., 2011.
MLA-viite (9. p.)
ebrary, Inc, et al. United States Travel and Tourism Industry. Nova Science Publishers, Inc., 2011.
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