Cita APA

Kirn, E., & Hartmann, P. (2007). Interactions (Silver ed.). New York : McGraw-Hill.

Chicago Style Citation

Kirn, Elaine., i Pamela Hartmann. Interactions. Silver ed. New York : McGraw-Hill, 2007.

Cita MLA

Kirn, Elaine., i Pamela Hartmann. Interactions. Silver ed. New York : McGraw-Hill, 2007.

Atenció: Aquestes cites poden no estar 100% correctes.