Cita APA (7a ed.)
Barrett-Lennard, G. T. (1998). Carl Rogers' helping system: Journey and substance. SAGE Publications.
Cita Chicago Style (17a ed.)
Barrett-Lennard, Godfrey T. Carl Rogers' Helping System: Journey and Substance. Los Angeles ; London: SAGE Publications, 1998.
Cita MLA (9a ed.)
Barrett-Lennard, Godfrey T. Carl Rogers' Helping System: Journey and Substance. SAGE Publications, 1998.
Precaución: Estas citas no son 100% exactas.