APA-čujuhus (7. p.)
Okun, B. F. (1982). Effective helping: Interviewing and counseling techniques.
Chicago-čujuhus (17. p.)
Okun, Barbara F. Effective Helping: Interviewing and Counseling Techniques. Monterey, Calif, 1982.
MLA-čujuhus (9. p.)
Okun, Barbara F. Effective Helping: Interviewing and Counseling Techniques. 1982.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.