Leahey, T. H. (1994). A history of modern psychology (2nd ed.). Prentice-Hall International.
Lua i Stíl Chicago (17ú heag.)Leahey, Thomas Hardy. A History of Modern Psychology. 2nd ed. London: Prentice-Hall International, 1994.
Lua MLA (9ú heag.)Leahey, Thomas Hardy. A History of Modern Psychology. 2nd ed. Prentice-Hall International, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.