Franklin W. Dixon. (2007). Hardy Boys: Kidnapped. Simon & Schuster.
Lua i Stíl Chicago (17ú heag.)Franklin W. Dixon. Hardy Boys: Kidnapped. New York: Simon & Schuster, 2007.
Lua MLA (9ú heag.)Franklin W. Dixon. Hardy Boys: Kidnapped. Simon & Schuster, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.