Cita APA (7a ed.)

Snell, G. D. (1988). Search for a rational ethic. Springer.

Cita Chicago Style (17a ed.)

Snell, George D. Search for a Rational Ethic. New York [etc.]: Springer, 1988.

Cita MLA (9a ed.)

Snell, George D. Search for a Rational Ethic. Springer, 1988.