APA (7th ed.) Citation

Percy, J. R. (1986). The study of variable stars using small telescopes. Cambridge University Press.

Chicago Style (17th ed.) Citation

Percy, John R. The Study of Variable Stars Using Small Telescopes. Cambrige: Cambridge University Press, 1986.

MLA (9th ed.) Citation

Percy, John R. The Study of Variable Stars Using Small Telescopes. Cambridge University Press, 1986.