Kirn, E., & Hartmann, P. (2002). Interactions (4th ed.). New York: McGraw-Hill/Contemporary.
Chicago Style CitationKirn, Elaine., i Pamela Hartmann. Interactions. 4th ed. New York: McGraw-Hill/Contemporary, 2002.
Cita MLAKirn, Elaine., i Pamela Hartmann. Interactions. 4th ed. New York: McGraw-Hill/Contemporary, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.