Lua APA (7ú heag.)
Okun, B. F. (2002). Effective helping: Interviewing and counseling techniques (6th ed.). Brooks/Cole.
Lua i Stíl Chicago (17ú heag.)
Okun, Barbara F. Effective Helping: Interviewing and Counseling Techniques. 6th ed. Pacific Grove, CA: Brooks/Cole, 2002.
Lua MLA (9ú heag.)
Okun, Barbara F. Effective Helping: Interviewing and Counseling Techniques. 6th ed. Brooks/Cole, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.