Gaya APA
VERDERBER, R, F.
(1998).
Inter-act
(
8, Cet. 1)
.
Belmont:
Wadsworth Publishing.
Gaya MLA
VERDERBER, Rudolph, F..
"Inter-act".
8, Cet. 1
Belmont:
Wadsworth Publishing,
1998.
Buku.