Cita APA (7a ed.)

Langs, R. (1999). Psychotherapy and science. SAGE Publications.

Cita Chicago Style (17a ed.)

Langs, Robert. Psychotherapy and Science. London ; Thousand Oaks, Calif.: SAGE Publications, 1999.

Cita MLA (9a ed.)

Langs, Robert. Psychotherapy and Science. SAGE Publications, 1999.