Dyfyniad APA

Joyce, P., & Sills, C. Skills in Gestalt counselling & psychotherapy (Fourth edition.).

Dyfyniad Arddull Chicago

Joyce, Phil, and Charlotte Sills. Skills in Gestalt Counselling & Psychotherapy. Fourth edition.

Dyfyniad MLA

Joyce, Phil, and Charlotte Sills. Skills in Gestalt Counselling & Psychotherapy. Fourth edition.

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