Gaya APA
Ebert, R., GRIFFIN, R, W.
(2007).
Business essentials
(
6th ed.)
.
New Jersey:
Pearson Prentice Hall.
Gaya MLA
Ebert, Ronald., GRIFFIN, Ricky, W..
"Business essentials".
6th ed.
New Jersey:
Pearson Prentice Hall,
2007.
Buku.