Cita APA (7a ed.)

Astronomical Observatory of Harvard College, Pickering, E. C., & Winlock, J. (1882). Micrometric measurements made with the equatorial telescope of fifteen inches aperture during the years 1866-1881. J. Wilson and Son.

Cita Chicago Style (17a ed.)

Astronomical Observatory of Harvard College, Edward C. Pickering, y Joseph Winlock. Micrometric Measurements Made with the Equatorial Telescope of Fifteen Inches Aperture During the Years 1866-1881. Cambridge (Mass.): J. Wilson and Son, 1882.

Cita MLA (9a ed.)

Astronomical Observatory of Harvard College, et al. Micrometric Measurements Made with the Equatorial Telescope of Fifteen Inches Aperture During the Years 1866-1881. J. Wilson and Son, 1882.