Personnel Research Federation (U.S.). (1922). Journal of Personnel Research. Williams & Wilkins.
Lua i Stíl Chicago (17ú heag.)Personnel Research Federation (U.S.). Journal of Personnel Research. Baltimore, Md: Williams & Wilkins, 1922.
Lua MLA (8ú heag.)Personnel Research Federation (U.S.). Journal of Personnel Research. Williams & Wilkins, 1922.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.