Assen, M. v. (2009). Key management models: The 60+ models every manager needs to know (2nd edition.). Financial Times Prentice Hall.
Chicago-viite (17. p.)Assen, Marcel van. Key Management Models: The 60+ Models Every Manager Needs to Know. 2nd edition. Harlow, England: Financial Times Prentice Hall, 2009.
MLA-viite (9. p.)Assen, Marcel van. Key Management Models: The 60+ Models Every Manager Needs to Know. 2nd edition. Financial Times Prentice Hall, 2009.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.