Newcomb, S. (1893). Popular astronomy: With one hundred and twelve engravings and five maps of the stars. Harper & Brothers.
Lua i Stíl Chicago (17ú heag.)Newcomb, Simon. Popular Astronomy: With One Hundred and Twelve Engravings and Five Maps of the Stars. New York: Harper & Brothers, 1893.
Lua MLA (8ú heag.)Newcomb, Simon. Popular Astronomy: With One Hundred and Twelve Engravings and Five Maps of the Stars. Harper & Brothers, 1893.
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