Johns, R. L. (1950). Psychology in everyday living. Harper.
Lua i Stíl Chicago (17ú heag.)Johns, Ralph Leslie. Psychology in Everyday Living. New York: Harper, 1950.
Lua MLA (9ú heag.)Johns, Ralph Leslie. Psychology in Everyday Living. Harper, 1950.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.