Bunge, M., & Funk, J. (2006). Singular coverings of toposes. Springer.
Lua i Stíl Chicago (17ú heag.)Bunge, Marta, agus Jonathon Funk. Singular Coverings of Toposes. Berlin, Heidelberg: Springer, 2006.
Lua MLA (8ú heag.)Bunge, Marta, agus Jonathon Funk. Singular Coverings of Toposes. Springer, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.