Nichols, S. G. (2010). Romanesque signs: Early medieval narrative and iconography. Davies Group, Publishers.
Lua i Stíl Chicago (17ú heag.)Nichols, Stephen G. Romanesque Signs: Early Medieval Narrative and Iconography. Aurora, Colo.: Davies Group, Publishers, 2010.
Lua MLA (9ú heag.)Nichols, Stephen G. Romanesque Signs: Early Medieval Narrative and Iconography. Davies Group, Publishers, 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.