Greene, M. R. (1981). Risk and insurance (5ª ed.). South-Western.
Cita Chicago (17th ed.)Greene, Mark R. Risk and Insurance. 5ª ed. South-Western, 1981.
Cita MLA (9th ed.)Greene, Mark R. Risk and Insurance. 5ª ed. South-Western, 1981.
Atenció: Aquestes cites poden no estar 100% correctes.