Sundberg, N. D. (1977). Assessment of persons. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Sundberg, Norman D. Assessment of Persons. New Jersey: Prentice Hall, 1977.
Lua MLA (9ú heag.)Sundberg, Norman D. Assessment of Persons. Prentice Hall, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.