APA (7th ed.) Citation
Hopkins, M. M. (1915). The Field of 61 Cygni: A study of Yerkes Observatory parallax photographs.
Chicago Style (17th ed.) Citation
Hopkins, Mary Murray. The Field of 61 Cygni: A Study of Yerkes Observatory Parallax Photographs. New York, 1915.
MLA (9th ed.) Citation
Hopkins, Mary Murray. The Field of 61 Cygni: A Study of Yerkes Observatory Parallax Photographs. 1915.
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