Lua APA (7ú heag.)
Morrison, T., Cavagnoli, F., & Bertolotti, A. (2019). Sula. Frassinelli : Pickwick.
Lua i Stíl Chicago (17ú heag.)
Morrison, Toni, Franca Cavagnoli, agus Antonio Bertolotti. Sula. Milano: Frassinelli : Pickwick, 2019.
Lua MLA (9ú heag.)
Morrison, Toni, et al. Sula. Frassinelli : Pickwick, 2019.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.