Gaya APA

E., G, O., L., H, J. (2001). Classroom Discipline ; A Management Guide For Christian School Teachers (Trawas) . Colorado: ACS International.

Gaya MLA

E., Gibbs, Ollie., L., Haddock , Jerry. "Classroom Discipline ; A Management Guide For Christian School Teachers (Trawas)". Colorado: ACS International, 2001. Text.