Gaya APA

Business essentials / Ronald J. Ebert ; Ricky W. Griffin. (2001). Upper Saddle River, NJ: Prentice-Hall, c.

Gaya MLA

Business essentials / Ronald J. Ebert ; Ricky W. Griffin. 3rd ed.. Upper Saddle River, NJ: Prentice-Hall, c, 2001. Buku Wajib.