Gaya APA
Umar, Husein. (2000).
Business An Introduction .
Jakarta:
Gramedia Pustaka Utama.
Gaya Chicago
Umar, Husein.
Business An Introduction.
Jakarta:
Gramedia Pustaka Utama,
2000.
Buku.
Gaya MLA
Umar, Husein.
Business An Introduction.
Jakarta:
Gramedia Pustaka Utama,
2000.
Buku.
Gaya Turabian
Umar, Husein.
Business An Introduction.
Jakarta:
Gramedia Pustaka Utama,
2000.
Buku.