APA استشهاد

Fraleigh, D., & Tuman, J. S. (2011). Freedom of expression in the marketplace of ideas. Sage Publications.

استشهاد بنمط شيكاغو

Fraleigh, Douglas, و Joseph S. Tuman. Freedom of Expression in the Marketplace of Ideas. Los Angeles, Calif.: Sage Publications, 2011.

MLA استشهاد

Fraleigh, Douglas, و Joseph S. Tuman. Freedom of Expression in the Marketplace of Ideas. Sage Publications, 2011.