APA Style
Ferree, T., Sanabria, K. (2004).
NorthStar. LIstening and Speaking, High Intermediate. (2nd Ed).
White Plains, New York:
Longman.
MLA Style
Ferree, Tess., Sanabria, Kim.
"NorthStar. LIstening and Speaking, High Intermediate.".
2nd Ed
White Plains, New York:
Longman,
2004.
Books.