APA Style

Solorzano, H, S., Schmidt, J, P, L. (2004). NorthStar. Listening and Speaking, Intermediate (2nd Ed). White Plains, New York: Longman.

MLA Style

Solorzano, Helen, S.., Schmidt, Jennifer, P., L.. "NorthStar. Listening and Speaking, Intermediate". 2nd Ed White Plains, New York: Longman, 2004. Books.