Garrett, H. (1967). Statistics in psychology & education (4th.). Fetter & Simons.
Lua i Stíl Chicago (17ú heag.)Garrett, H. Statistics in Psychology & Education. 4th. Bombay: Fetter & Simons, 1967.
Lua MLA (9ú heag.)Garrett, H. Statistics in Psychology & Education. 4th. Fetter & Simons, 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.