Cita APA (7th ed.)
Pickover, C. A. (2004). The stars of heaven. Oxford University Press.
Cita Chicago (17th ed.)
Pickover, Clifford A. The Stars of Heaven. Oxford ; New York: Oxford University Press, 2004.
Cita MLA (9th ed.)
Pickover, Clifford A. The Stars of Heaven. Oxford University Press, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.