Gaya APA
Slavin, R, E.
(1994).
Educational Psychology : Theory and Practice Ed. 4'th
(
4)
.
Massachusetts:
Allyn & Bacon.
Gaya MLA
Slavin, Robert, E..
"Educational Psychology : Theory and Practice Ed. 4'th".
4
Massachusetts:
Allyn & Bacon,
1994.
Text.