Não informado. (1935). Contributions from the Perkins Observatory. Ohio State University, Ohio Wesleyan University.
Lua i Stíl Chicago (17ú heag.)Não informado. Contributions from the Perkins Observatory. Delaware, Ohio: Ohio State University, Ohio Wesleyan University, 1935.
Lua MLA (8ú heag.)Não informado. Contributions from the Perkins Observatory. Ohio State University, Ohio Wesleyan University, 1935.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.