Lua APA (7ú heag.)
Norlin, J. M., & Chess, W. A. (2003). Human behavior and social environment: Social systems theory (4th ed.). Allyn & Bacon.
Lua i Stíl Chicago (17ú heag.)
Norlin, Julia M., agus Wayne A. Chess. Human Behavior and Social Environment: Social Systems Theory. 4th ed. London: Allyn & Bacon, 2003.
Lua MLA (9ú heag.)
Norlin, Julia M., agus Wayne A. Chess. Human Behavior and Social Environment: Social Systems Theory. 4th ed. Allyn & Bacon, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.