APA Style
BUSINESS ENGLISH. (2005).
Malang:
Bayumedia publishing.
Chicago Style
BUSINESS ENGLISH.
1.
Malang:
Bayumedia publishing,
2005.
Buku Ajar.
MLA Style
BUSINESS ENGLISH.
1.
Malang:
Bayumedia publishing,
2005.
Buku Ajar.
Turabian Style
BUSINESS ENGLISH.
Malang:
Bayumedia publishing,
2005.
Buku Ajar.