Cita APA (7a ed.)

Purcell, E. A. (1973). The Crisis of Democratic Theory: Scientific Naturalism and the Problem of Value. University Press of Kentucky.

Cita Chicago Style (17a ed.)

Purcell, Edward A. The Crisis of Democratic Theory: Scientific Naturalism and the Problem of Value. [Lexington]: University Press of Kentucky, 1973.

Cita MLA (8a ed.)

Purcell, Edward A. The Crisis of Democratic Theory: Scientific Naturalism and the Problem of Value. University Press of Kentucky, 1973.