Gaya APA
GALANES, G, J., ADAMS, K.
(1995).
Communicating in groups
(
4)
.
McGraw-Hill:
New York.
Gaya MLA
GALANES, Gloria, J.., ADAMS, Katrine.
"Communicating in groups".
4
McGraw-Hill:
New York,
1995.
Buku.