APA aipamena

Frazier, L. (2020). NorthStar 2 Listening & Speaking (5ed.). Pearson.

Chicago Style aipamena

Frazier, Laurie. NorthStar 2 Listening & Speaking. 5ed. Pearson, 2020.

MLA aipamena

Frazier, Laurie. NorthStar 2 Listening & Speaking. 5ed. Pearson, 2020.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.