Emmet, E. R. (1980). The island of imperfection puzzle book: With other assorted brainteasers. Barnes & Noble.
Lua i Stíl Chicago (17ú heag.)Emmet, E. R. The Island of Imperfection Puzzle Book: With Other Assorted Brainteasers. New York: Barnes & Noble, 1980.
Lua MLA (9ú heag.)Emmet, E. R. The Island of Imperfection Puzzle Book: With Other Assorted Brainteasers. Barnes & Noble, 1980.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.