Lua APA (7ú heag.)

Okun, B. F. (1992). Effective helping: Interviewing and counseling techniques (4th ed.). Brooks/Cole Pub. Co.

Lua i Stíl Chicago (17ú heag.)

Okun, Barbara F. Effective Helping: Interviewing and Counseling Techniques. 4th ed. Pacific Grove, Calif: Brooks/Cole Pub. Co, 1992.

Lua MLA (9ú heag.)

Okun, Barbara F. Effective Helping: Interviewing and Counseling Techniques. 4th ed. Brooks/Cole Pub. Co, 1992.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.