Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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