Rickards, M. (1988). Collecting Printed Ephemera. Phaidon - Christies.
Lua i Stíl Chicago (17ú heag.)Rickards, Maurice. Collecting Printed Ephemera. Oxford: Phaidon - Christies, 1988.
Lua MLA (8ú heag.)Rickards, Maurice. Collecting Printed Ephemera. Phaidon - Christies, 1988.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.