Gaya APA

Zainul, A., Lie, A. (2005,2008,2010). Cooperative Learning: Mempraktikkan Cooperative Learning Di Ruang-ruang Kelas . Jakarta: Grasindo.

Gaya MLA

Zainul, Asmawi., Lie, Anita. "Cooperative Learning: Mempraktikkan Cooperative Learning Di Ruang-ruang Kelas". Jakarta: Grasindo, 2005,2008,2010. Text.