Cita APA (7a ed.)

LUCAS, J. (1966). The principles of politics. Clarendon Press.

Cita Chicago Style (17a ed.)

LUCAS, J.R. The Principles of Politics. Oxford: Clarendon Press, 1966.

Cita MLA (9a ed.)

LUCAS, J.R. The Principles of Politics. Clarendon Press, 1966.