Gaya APA
Umar, Husein. (2000).
Business: an introduction .
Jakarta:
Gramedia Pustaka Utama.
Gaya Chicago
Umar, Husein.
Business: an introduction.
Jakarta:
Gramedia Pustaka Utama,
2000.
Text.
Gaya MLA
Umar, Husein.
Business: an introduction.
Jakarta:
Gramedia Pustaka Utama,
2000.
Text.
Gaya Turabian
Umar, Husein.
Business: an introduction.
Jakarta:
Gramedia Pustaka Utama,
2000.
Print.