Cita APA (7th ed.)
Spurgeon, E. F. (2011). Life contingencies. Cambridge.
Cita Chicago (17th ed.)
Spurgeon, E. F. Life Contingencies. New York: Cambridge, 2011.
Cita MLA (9th ed.)
Spurgeon, E. F. Life Contingencies. Cambridge, 2011.
Atenció: Aquestes cites poden no estar 100% correctes.