Gaya APA

Barkley,.., E, E. (2016). Collaborative learning techniques/Elizabert E.Barkley (Cet.1v). Bandung,: Nusa Media.

Gaya MLA

Barkley,.., Elizabert, E.. "Collaborative learning techniques/Elizabert E.Barkley". Cet.1v Bandung,: Nusa Media, 2016. Text.