Berkley, G. (1940). The principles of human knowledge. The open court publishing company.
Cita Chicago Style (17a ed.)Berkley, George. The Principles of Human Knowledge. Illinois: The open court publishing company, 1940.
Cita MLA (8a ed.)Berkley, George. The Principles of Human Knowledge. The open court publishing company, 1940.
Precaución: Estas citas no son 100% exactas.