Cita APA (7th ed.)
Sinnott-Armstrong, W. (2009). Morality without God? Oxford University Press.
Cita Chicago (17th ed.)
Sinnott-Armstrong, Walter. Morality Without God? New York, New York: Oxford University Press, 2009.
Cita MLA (9th ed.)
Sinnott-Armstrong, Walter. Morality Without God? Oxford University Press, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.