Lua APA (7ú heag.)

Guilford, J. P. (1959). Psychometric methods. McGraw-Hill Book Company.

Lua i Stíl Chicago (17ú heag.)

Guilford, J. P. Psychometric Methods. New York: McGraw-Hill Book Company, 1959.

Lua MLA (9ú heag.)

Guilford, J. P. Psychometric Methods. McGraw-Hill Book Company, 1959.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.