The cepheid variable [pi] aquilae, the eclipsing binary [sigma] aquilae

Chicago citation style
Wylie, C. C. (Charles Clayton), b. 1886. The cepheid variable [pi] aquilae, the eclipsing binary [sigma] aquilae. 1922]. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/008423470. (Accessed December 15, 2018.)
APA citation style
Wylie, C. C. (Charles Clayton), b. 1886, (1922]) The cepheid variable [pi] aquilae, the eclipsing binary [sigma] aquilae. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/008423470
MLA citation style
Wylie, C. C. (Charles Clayton), b. 1886. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/008423470>.
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