Gaya APA

Dhami, N., Brazell, D. (2009). Pearson Baccalaureate PYP Readers : Rollercoaster . Essex: Pearson Education Ltd..

Gaya MLA

Dhami, Narinder., Brazell, Derek. "Pearson Baccalaureate PYP Readers : Rollercoaster". Essex: Pearson Education Ltd., 2009. Text.