APA Style
Model Business Letter. (1956).
United States of America:
Prentice Hall.
Chicago Style
Model Business Letter.
.
United States of America:
Prentice Hall,
1956.
Text.
MLA Style
Model Business Letter.
.
United States of America:
Prentice Hall,
1956.
Text.
Turabian Style
Model Business Letter.
United States of America:
Prentice Hall,
1956.
Print.