Cita APA (7a ed.)

Hey, J. D. (1997). The economics of uncertainty. Elgar.

Cita Chicago Style (17a ed.)

Hey, John D. The Economics of Uncertainty. Cheltenham [etc.]: Elgar, 1997.

Cita MLA (9a ed.)

Hey, John D. The Economics of Uncertainty. Elgar, 1997.