Gaya APA
Cooperative Learning. (2014).
Jakarta:
Gramedia Widiasarana Indonesia (Grasindo).
Gaya Chicago
Cooperative Learning.
Cet. 7.
Jakarta:
Gramedia Widiasarana Indonesia (Grasindo),
2014.
.
Gaya MLA
Cooperative Learning.
Cet. 7.
Jakarta:
Gramedia Widiasarana Indonesia (Grasindo),
2014.
.
Gaya Turabian
Cooperative Learning.
Jakarta:
Gramedia Widiasarana Indonesia (Grasindo),
2014.
.