Cita APA

Kirn, E., & Hartmann, P. (2002). Interactions (4th ed.). New York: McGraw-Hill Companies.

Chicago Style Citation

Kirn, Elaine., i Pamela Hartmann. Interactions. 4th ed. New York: McGraw-Hill Companies, 2002.

Cita MLA

Kirn, Elaine., i Pamela Hartmann. Interactions. 4th ed. New York: McGraw-Hill Companies, 2002.

Atenció: Aquestes cites poden no estar 100% correctes.