Não informado. (1898). Annals of Lowell Observatory, Flagstaff, Arizona. Lowell Observatory.
Lua i Stíl Chicago (17ú heag.)Não informado. Annals of Lowell Observatory, Flagstaff, Arizona. Boston, Mass: Lowell Observatory, 1898.
Lua MLA (8ú heag.)Não informado. Annals of Lowell Observatory, Flagstaff, Arizona. Lowell Observatory, 1898.
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