Chess, W. A. (1988). Human behavior and the social environment a social systems model. Allyn and Bacon.
Lua i Stíl Chicago (17ú heag.)Chess, Wayne A. Human Behavior and the Social Environment a Social Systems Model. Allyn and Bacon, 1988.
Lua MLA (9ú heag.)Chess, Wayne A. Human Behavior and the Social Environment a Social Systems Model. Allyn and Bacon, 1988.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.