Gaya APA
Helgesen, Marc, Keith Adams. (1992).
Workplace English Trafel File .
china:
addison Wesley Longman.
Gaya Chicago
Helgesen, Marc, Keith Adams.
Workplace English Trafel File.
china:
addison Wesley Longman,
1992.
Buku.
Gaya MLA
Helgesen, Marc, Keith Adams.
Workplace English Trafel File.
china:
addison Wesley Longman,
1992.
Buku.
Gaya Turabian
Helgesen, Marc, Keith Adams.
Workplace English Trafel File.
china:
addison Wesley Longman,
1992.
Buku.