Gaya APA

Hallahan, D, E. et al (2012). Exceptional Learners : An Introduction to Special Education Ed. 12'th (12). New Jersey: Pearson Education.

Gaya MLA

Hallahan, Daniel, E.. et al. "Exceptional Learners : An Introduction to Special Education Ed. 12'th". 12 New Jersey: Pearson Education, 2012. Text.