Cooper, C. L. (1982). Improving interpersonal relations: A guide to social skill development for managers and group leaders. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Cooper, Cary L. Improving Interpersonal Relations: A Guide to Social Skill Development for Managers and Group Leaders. Prentice Hall, 1982.
Lua MLA (9ú heag.)Cooper, Cary L. Improving Interpersonal Relations: A Guide to Social Skill Development for Managers and Group Leaders. Prentice Hall, 1982.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.