APA Style
Manual of style for business memos and reports let. (1989).
Cincinnati:
South-Western.
Chicago Style
Manual of style for business memos and reports let.
.
Cincinnati:
South-Western,
1989.
.
MLA Style
Manual of style for business memos and reports let.
.
Cincinnati:
South-Western,
1989.
.
Turabian Style
Manual of style for business memos and reports let.
Cincinnati:
South-Western,
1989.
.