Duplex, M. (1990). Mystery on colton`s island. Pacific Press.
Lua i Stíl Chicago (17ú heag.)Duplex, Mary. Mystery on Colton`s Island. Boise, ID: Pacific Press, 1990.
Lua MLA (9ú heag.)Duplex, Mary. Mystery on Colton`s Island. Pacific Press, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.