Jacobs, E. P. (1991). O Caso do Colar. Meribérica/Liber.
Lua i Stíl Chicago (17ú heag.)Jacobs, Edgar P. O Caso Do Colar. Meribérica/Liber, 1991.
Lua MLA (8ú heag.)Jacobs, Edgar P. O Caso Do Colar. Meribérica/Liber, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.