Gaya APA
Kartasapoetra, , G., Simanjuntak, .
(1983).
Business management : teori-praktek
.
Bandung:
Armico.
Gaya MLA
Kartasapoetra, , G., Simanjuntak, .
"Business management : teori-praktek".
Bandung:
Armico,
1983.
Text.