Gaya APA
Norman, Susan. (1984).
Were in business : English for commercial practice and international trade .
Hongkong:
Longman.
Gaya Chicago
Norman, Susan.
Were in business : English for commercial practice and international trade.
Hongkong:
Longman,
1984.
Buku.
Gaya MLA
Norman, Susan.
Were in business : English for commercial practice and international trade.
Hongkong:
Longman,
1984.
Buku.
Gaya Turabian
Norman, Susan.
Were in business : English for commercial practice and international trade.
Hongkong:
Longman,
1984.
Buku.