Não informado. (2012). Publications of the Yerkes Observatory. University of Chicago Press.
Lua i Stíl Chicago (17ú heag.)Não informado. Publications of the Yerkes Observatory. Chicago, Ill: University of Chicago Press, 2012.
Lua MLA (8ú heag.)Não informado. Publications of the Yerkes Observatory. University of Chicago Press, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.