Cita APA (7th ed.)

Porter, J. M. (1989). Classics in political philosophy. Prentice-Hall.

Cita Chicago (17th ed.)

Porter, Jene M. Classics in Political Philosophy. Ontorio: Prentice-Hall, 1989.

Cita MLA (9th ed.)

Porter, Jene M. Classics in Political Philosophy. Prentice-Hall, 1989.