Gaya APA

[et.all], J, C., Purwoko, M, V, H, P, H, I, D, S. (2012). Sahabat-sahabat istimewa (Cet.1). Jakarta: .

Gaya MLA

[et.all], Jac, Canfield., Purwoko, Mark, Victor, Hansen,, Patty, Hansen,, Irene, Dunlap,, Susi. "Sahabat-sahabat istimewa". Cet.1 Jakarta: , 2012. Text.