Cita APA

Mayall, R. N., Mayall, M. W., & Wyckoff, J. (1959). The Sky obsrever's guide: A handbook for amateur astronomers. New York, New York: Golden Press.

Citación estilo Chicago

Mayall, Robert Newton, Margaret Walton Mayall, y Jerome Wyckoff. The Sky Obsrever's Guide: A Handbook for Amateur Astronomers. New York, New York: Golden Press, 1959.

Cita MLA

Mayall, Robert Newton, Margaret Walton Mayall, y Jerome Wyckoff. The Sky Obsrever's Guide: A Handbook for Amateur Astronomers. New York, New York: Golden Press, 1959.