Haddon, A. C. (1998). The study of man. Bliss, Sands.
Lua i Stíl Chicago (17ú heag.)Haddon, Alfred C. The Study of Man. Bliss, Sands, 1998.
Lua MLA (8ú heag.)Haddon, Alfred C. The Study of Man. Bliss, Sands, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.