Cita APA (7th ed.)

Purcell, E. A. (1973). The crisis of democratic theory: Scientific naturalism & the problem of value. University Press of Kentucky.

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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