Cita APA (7a ed.)

Knight, F. H. (1921). Risk, uncertainty and profit. Houghton Mifflin Company.

Cita Chicago Style (17a ed.)

Knight, Frank Hyneman. Risk, Uncertainty and Profit. Boston: Houghton Mifflin Company, 1921.

Cita MLA (8a ed.)

Knight, Frank Hyneman. Risk, Uncertainty and Profit. Houghton Mifflin Company, 1921.