Cita APA (7a ed.)

Webb, T. W., & Espin, T. E. (1911). Celestial objects for common telescopes revised. Longmans, Green.

Cita Chicago Style (17a ed.)

Webb, T. W., y T. E. Espin. Celestial Objects for Common Telescopes Revised. London [etc.]: Longmans, Green, 1911.

Cita MLA (9a ed.)

Webb, T. W., y T. E. Espin. Celestial Objects for Common Telescopes Revised. Longmans, Green, 1911.