APA aipamena

 Merdinger, P. (2009).  Northstar 1: Listening and Speaking.  Pearson Education.

Chicago Style aipamena

 Merdinger, Polly.  Northstar 1: Listening and Speaking.  Pearson Education, 2009.

MLA aipamena

 Merdinger, Polly.  Northstar 1: Listening and Speaking.  Pearson Education, 2009.

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