Cita APA (7th ed.)
Langs, R. (1998). Ground rules in psychotherapy and counselling. Karnac Books.
Cita Chicago (17th ed.)
Langs, Robert. Ground Rules in Psychotherapy and Counselling. London: Karnac Books, 1998.
Cita MLA (9th ed.)
Langs, Robert. Ground Rules in Psychotherapy and Counselling. Karnac Books, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.