Cita APA (7a ed.)

Berlin, I., & Hardy, H. (2013). Concepts and categories: Philosophical essays (Second edition.). Princeton University Press.

Cita Chicago Style (17a ed.)

Berlin, Isaiah, y Henry Hardy. Concepts and Categories: Philosophical Essays. Second edition. Princeton, New Jersey: Princeton University Press, 2013.

Cita MLA (8a ed.)

Berlin, Isaiah, y Henry Hardy. Concepts and Categories: Philosophical Essays. Second edition. Princeton University Press, 2013.