APA aipamena

Solórzano, H. S., & Helen S Solórzano; Jennifer Schmidt. (2015). Northstar: Listening and speaking. White Plains, NY: Pearson Education.

Chicago Style aipamena

Solórzano, Helen Sophia, và Helen S Solórzano; Jennifer Schmidt. Northstar: Listening and Speaking. White Plains, NY: Pearson Education, 2015.

MLA aipamena

Solórzano, Helen Sophia, và Helen S Solórzano; Jennifer Schmidt. Northstar: Listening and Speaking. White Plains, NY: Pearson Education, 2015.

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