Cita APA (7a ed.)

Smyth, W. H., & Chambers, G. F. (1881). A cycle of celestial objects (2nd ed.). Clarendon Press.

Cita Chicago Style (17a ed.)

Smyth, William Henry, y George F. Chambers. A Cycle of Celestial Objects. 2nd ed. Oxford: Clarendon Press, 1881.

Cita MLA (9a ed.)

Smyth, William Henry, y George F. Chambers. A Cycle of Celestial Objects. 2nd ed. Clarendon Press, 1881.