Gaya APA

Barraclough, S. et al (2009). Pearson Baccalaureate PYP Readers : Fast and Slow . Essex: Pearson Education Ltd..

Gaya MLA

Barraclough, Sue. et al. "Pearson Baccalaureate PYP Readers : Fast and Slow". Essex: Pearson Education Ltd., 2009. Text.