Gaya APA
The Business of The 21st Century. (2011).
Bandung:
Khazanah Bahan.
Gaya Chicago
The Business of The 21st Century.
.
Bandung:
Khazanah Bahan,
2011.
.
Gaya MLA
The Business of The 21st Century.
.
Bandung:
Khazanah Bahan,
2011.
.
Gaya Turabian
The Business of The 21st Century.
Bandung:
Khazanah Bahan,
2011.
.