Cita APA (7th ed.)
Schmidtz, D., & Brennan, J. (2010). A brief history of liberty. Wiley-Blackwell.
Cita Chicago (17th ed.)
Schmidtz, David, i Jason Brennan. A Brief History of Liberty. Chichester, U.K. ; Malden, MA: Wiley-Blackwell, 2010.
Cita MLA (9th ed.)
Schmidtz, David, i Jason Brennan. A Brief History of Liberty. Wiley-Blackwell, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.