Cita APA (7a ed.)

Sanders, D., Wills, F., & Hallam, R. S. (2003). Counselling for anxiety problems (2nd ed.). Sage Pub..

Cita Chicago Style (17a ed.)

Sanders, Diana, Frank Wills, y Richard S. Hallam. Counselling for Anxiety Problems. 2nd ed. London ; Thousand Oaks, Calif.: Sage Pub., 2003.

Cita MLA (8a ed.)

Sanders, Diana, et al. Counselling for Anxiety Problems. 2nd ed. Sage Pub., 2003.