Fitts, D. (1962). Herbert. Dell publishing company.
Lua i Stíl Chicago (17ú heag.)Fitts, Dudley. Herbert. New York: Dell publishing company, 1962.
Lua MLA (9ú heag.)Fitts, Dudley. Herbert. Dell publishing company, 1962.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.