Não informado. (2018). The Ophthalmic Year Book. The Herrick Book and Stationery Company.
Lua i Stíl Chicago (17ú heag.)Não informado. The Ophthalmic Year Book. Denver, Colo: The Herrick Book and Stationery Company, 2018.
Lua MLA (8ú heag.)Não informado. The Ophthalmic Year Book. The Herrick Book and Stationery Company, 2018.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.