Gaya APA
Ebert, R, J., Griffin, R, W. (1999).
BUSINESS ESSENTIALS Third Edition .
London, UK:
Prentice Hall International.
Gaya MLA
Ebert, Ronald, J.., Griffin, Ricky, W..
"BUSINESS ESSENTIALS Third Edition".
London, UK:
Prentice Hall International,
1999.
Teksbook.