Cita APA (7a ed.)

Pickering, E. C., Searle, A., & Upton, W. (1879). Photometric observations made principally with the equatorial telescope of fifteen inches aperture during the years 1877-79. J. Wilson and Son.

Cita Chicago Style (17a ed.)

Pickering, Edward C., Arthur Searle, y Winslow Upton. Photometric Observations Made Principally with the Equatorial Telescope of Fifteen Inches Aperture During the Years 1877-79. Cambridge (Mass.): J. Wilson and Son, 1879.

Cita MLA (9a ed.)

Pickering, Edward C., et al. Photometric Observations Made Principally with the Equatorial Telescope of Fifteen Inches Aperture During the Years 1877-79. J. Wilson and Son, 1879.