Smith, M. (1978). When I say no, I feel guilty. Dell Pub.
Cita Chicago (17th ed.)Smith, Manuel. When I Say No, I Feel Guilty. New York: Dell Pub, 1978.
Cita MLA (9th ed.)Smith, Manuel. When I Say No, I Feel Guilty. Dell Pub, 1978.
Atenció: Aquestes cites poden no estar 100% correctes.