APA

Patterson C. H., . (1986). Theories of counseling and psychotherapy. New York: Harper Collins Publishers.

Chicago

Patterson C H, . 1986. Theories of counseling and psychotherapy. New York: Harper Collins Publishers.

Harvard

Patterson C. H., . (1986). Theories of counseling and psychotherapy. New York: Harper Collins Publishers.

MLA

Patterson C H, . Theories of counseling and psychotherapy. New York: Harper Collins Publishers. 1986.