Cita APA

Ridpath, I. (2012). A dictionary of astronomy (2. edition revised.). Oxford, New York: Oxford University Press.

Citación estilo Chicago

Ridpath, Ian. A Dictionary of Astronomy. 2. edition revised. Oxford, New York: Oxford University Press, 2012.

Cita MLA

Ridpath, Ian. A Dictionary of Astronomy. 2. edition revised. Oxford, New York: Oxford University Press, 2012.