Gaya APA
A.Dumont, R., M.Lannon, J.
(1985).
Business Comunications
.
America:
Litlle , Brown & Cpany.
Gaya MLA
A.Dumont, Raymond., M.Lannon, Jhon.
"Business Comunications".
America:
Litlle , Brown & Cpany,
1985.
Text.