Cooper, J. C., Middell, G., & Middell, M. (1986). Lexikon alter Symbole (o.A.). Seemann.
Lua i Stíl Chicago (17ú heag.)Cooper, J. C., Gudrun Middell, agus Matthias Middell. Lexikon Alter Symbole. o.A. Leipzig: Seemann, 1986.
Lua MLA (8ú heag.)Cooper, J. C., et al. Lexikon Alter Symbole. o.A. Seemann, 1986.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.