Cita APA (7a ed.)

Campbell, W. (1913). The Elements of practical astronomy (2nd ed., rev. and enlarged.). Macmillan.

Cita Chicago Style (17a ed.)

Campbell, W.W. The Elements of Practical Astronomy. 2nd ed., rev. and enlarged. New York [etc.]: Macmillan, 1913.

Cita MLA (9a ed.)

Campbell, W.W. The Elements of Practical Astronomy. 2nd ed., rev. and enlarged. Macmillan, 1913.

Precaución: Estas citas no son 100% exactas.