Allen, R. J. (1983). Human stress: Its nature and control. Burgess.
Lua i Stíl Chicago (17ú heag.)Allen, Roger J. Human Stress: Its Nature and Control. Minneapolis: Burgess, 1983.
Lua MLA (9ú heag.)Allen, Roger J. Human Stress: Its Nature and Control. Burgess, 1983.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.