Gaya APA
W, G.
(1997).
Bisnis - Busines,Fourth Editian Jilid 1
.
Jakarta,DKI:
Prenhallindo.
Gaya MLA
W, GRIFFIN,Ricky.
"Bisnis - Busines,Fourth Editian Jilid 1".
Jakarta,DKI:
Prenhallindo,
1997.
Text.