Cita APA

 English, A. K. (2015).  Northstar 4: Reading & writing.  Pearson Education.

Chicago Style Citation

 English, Andrew K.  Northstar 4: Reading & Writing.  Pearson Education, 2015.

Cita MLA

 English, Andrew K.  Northstar 4: Reading & Writing.  Pearson Education, 2015.

Atenció: Aquestes cites poden no estar 100% correctes.