Gaya APA
Tepper, R., Wiley, J.
(1987).
THE CONSULTANT'S PROBLEM-SOLVING WORK BOOK
.
amerika serikat:
kanada.
Gaya MLA
Tepper, Ron., Wiley, John.
"THE CONSULTANT'S PROBLEM-SOLVING WORK BOOK".
amerika serikat:
kanada,
1987.
Buku.