Tohutoro APA (7th ed.)
Langs, R. (1999). Psychotherapy and science. SAGE Publications.
Tohutoru Kātū Chicago (17th ed.)
Langs, Robert. Psychotherapy and Science. London ; Thousand Oaks, Calif.: SAGE Publications, 1999.
Tohutoro MLA (9th ed.)
Langs, Robert. Psychotherapy and Science. SAGE Publications, 1999.
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