APA Style
Mills, R., Frazier, L. (2004).
NorthStar. Listening and Speaking, Basic / Low Intermediate (2nd).
White Plains, New York:
Longman.
MLA Style
Mills, Robin., Frazier, Laurie.
"NorthStar. Listening and Speaking, Basic / Low Intermediate".
2nd
White Plains, New York:
Longman,
2004.
Books.