Wrenn, R. L. (1966). Basic contributions to psychology: Readings. Wadsworth.
Lua i Stíl Chicago (17ú heag.)Wrenn, Robert L. Basic Contributions to Psychology: Readings. Belmont, Calif: Wadsworth, 1966.
Lua MLA (9ú heag.)Wrenn, Robert L. Basic Contributions to Psychology: Readings. Wadsworth, 1966.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.