Kagan, D. (1996). Western heritage brief: Study guide and work book. Prentice Hall.
Chicago-viite (17. p.)Kagan, Donald. Western Heritage Brief: Study Guide and Work Book. New Jersey: Prentice Hall, 1996.
MLA-viite (9. p.)Kagan, Donald. Western Heritage Brief: Study Guide and Work Book. Prentice Hall, 1996.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.