Cita APA (7a ed.)

Pieper, J. (2016). Four Cardinal Virtues, The: Human Agency, Intellectual Traditions, and Responsible Knowledge. Project Muse.

Cita Chicago Style (17a ed.)

Pieper, Josef. Four Cardinal Virtues, The: Human Agency, Intellectual Traditions, and Responsible Knowledge. Baltimore, Maryland: Project Muse, 2016.

Cita MLA (8a ed.)

Pieper, Josef. Four Cardinal Virtues, The: Human Agency, Intellectual Traditions, and Responsible Knowledge. Project Muse, 2016.