Plaidy, J. (1960). Castile for Isabella. Robert Hale.
Lua i Stíl Chicago (17ú heag.)Plaidy, Jean. Castile for Isabella. London: Robert Hale, 1960.
Lua MLA (8ú heag.)Plaidy, Jean. Castile for Isabella. Robert Hale, 1960.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.