APA Style

Solorzano, H, S., Schmidt, J, P. (2009). NorthStar 3 : Listening and speaking (Third edition) . New York: Pearson Education.

MLA Style

Solorzano, Helen, S.., Schmidt, Jennifer, P.. "NorthStar 3 : Listening and speaking (Third edition)". New York: Pearson Education, 2009. Buku SMA Athalia.