APA Style
Guffey, Mary Ellen. (1992).
BUSINESS ENGLISH, FOURTH EDITION (4).
Belmont:
Wadsworth Publisihing company.
Chicago Style
Guffey, Mary Ellen.
BUSINESS ENGLISH, FOURTH EDITION.
4
Belmont:
Wadsworth Publisihing company,
1992.
Text.
MLA Style
Guffey, Mary Ellen.
BUSINESS ENGLISH, FOURTH EDITION.
4
Belmont:
Wadsworth Publisihing company,
1992.
Text.
Turabian Style
Guffey, Mary Ellen.
BUSINESS ENGLISH, FOURTH EDITION.
4
Belmont:
Wadsworth Publisihing company,
1992.
Print.