Breysig, K., & Valeton, M. (1960). Castrum Peregrini. Castrum Peregrini Press.
Lua i Stíl Chicago (17ú heag.)Breysig, Kurt, agus Michiel Valeton. Castrum Peregrini. Amsterdam: Castrum Peregrini Press, 1960.
Lua MLA (8ú heag.)Breysig, Kurt, agus Michiel Valeton. Castrum Peregrini. Castrum Peregrini Press, 1960.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.