Gaya APA

Haugnes, N., Maher, B. (2009). Northstar 2 - reading and writing (Ed. 3). USA: Pearson Education.

Gaya MLA

Haugnes, Natasha., Maher, Beth. "Northstar 2 - reading and writing". Ed. 3 USA: Pearson Education, 2009. Umum.