APA-viite (7. p.)
ebrary, Inc, Freytag, P. V., & Ritter, T. (2007). Challenging business relationships. Emerald Group Publishing.
Chicago-viite (17. p.)
ebrary, Inc, Per Vagn Freytag, ja Thomas Ritter. Challenging Business Relationships. Bradford, England: Emerald Group Publishing, 2007.
MLA-viite (9. p.)
ebrary, Inc, et al. Challenging Business Relationships. Emerald Group Publishing, 2007.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.