Gaya APA
Kroenke, D, M., Dolan, K, A.
(1989).
Business computer system
(
3rd.ed.)
.
Singapore:
McGraw-Hill Book Co.,.
Gaya MLA
Kroenke, David, M., Dolan, Kathleen, A.
"Business computer system".
3rd.ed.
Singapore:
McGraw-Hill Book Co.,,
1989.
Text.