The positions and proper motions of the principal stars in the cluster of Coma Berenices as deduced from measurements of the Rutherfurd photographs

Chicago citation style
Kretz, Walter Coluzzi, 1878-1927. The positions and proper motions of the principal stars in the cluster of Coma Berenices as deduced from measurements of the Rutherfurd photographs. 1900. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/008423465. (Accessed December 19, 2018.)
APA citation style
Kretz, Walter Coluzzi, 1878-1927, (1900) The positions and proper motions of the principal stars in the cluster of Coma Berenices as deduced from measurements of the Rutherfurd photographs. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/008423465
MLA citation style
Kretz, Walter Coluzzi, 1878-1927. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/008423465>.
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