Results of observations with the zenith telescope of the Flower Astronomical Observatory from September 6, 1898, to August 30, 1901.

MLA

Doolittle, C. L. and University of Pennsylvania. Results of observations with the zenith telescope of the Flower Astronomical Observatory from September 6, 1898, to August 30, 1901. Philadelphia, Pa., 1903.

APA

Doolittle, C. & University of Pennsylvania. (1903). Results of observations with the zenith telescope of the Flower Astronomical Observatory from September 6, 1898, to August 30, 1901. Philadelphia, Pa..

Chicago

Doolittle, C. L. and University of Pennsylvania. Results of observations with the zenith telescope of the Flower Astronomical Observatory from September 6, 1898, to August 30, 1901. Philadelphia, Pa., 1903.