(1970). American English today. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)American English Today. New York: McGraw-Hill, 1970.
Lua MLA (9ú heag.)American English Today. McGraw-Hill, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.