Adler,Mortimer J. (1981). Six great ideas. Macmillan.
Lua i Stíl Chicago (17ú heag.)Adler,Mortimer J. Six Great Ideas. New York: Macmillan, 1981.
Lua MLA (9ú heag.)Adler,Mortimer J. Six Great Ideas. Macmillan, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.