Croft, S.K. (março de 1989). New Geologic Maps of the Uranian Satellites Titania, Oberon, Umbriel and Miranda. Proceeding of Lunar and Planetary Sciences. 20. Lunar and Planetary Sciences Institute, Houston. p.205C. Bibcode:1989LPI....20..205C
Smith, B. A.; Soderblom, L. A.; Beebe, A.; Bliss, D.; Boyce, J. M.; Brahic, A.; Briggs, G. A.; Brown, R. H.; Collins, S. A. (4 de julho de 1986). «Voyager 2 in the Uranian System: Imaging Science Results». Science. 233 (4759): 43–64. Bibcode:1986Sci...233...43S. PMID17812889. doi:10.1126/science.233.4759.43
Smith, B. A.; Soderblom, L. A.; Beebe, A.; Bliss, D.; Boyce, J. M.; Brahic, A.; Briggs, G. A.; Brown, R. H.; Collins, S. A. (4 de julho de 1986). «Voyager 2 in the Uranian System: Imaging Science Results». Science. 233 (4759): 43–64. Bibcode:1986Sci...233...43S. PMID17812889. doi:10.1126/science.233.4759.43
Smith, B. A.; Soderblom, L. A.; Beebe, A.; Bliss, D.; Boyce, J. M.; Brahic, A.; Briggs, G. A.; Brown, R. H.; Collins, S. A. (4 de julho de 1986). «Voyager 2 in the Uranian System: Imaging Science Results». Science. 233 (4759): 43–64. Bibcode:1986Sci...233...43S. PMID17812889. doi:10.1126/science.233.4759.43