Cita APA (7th ed.)
Gray, J. (1998). Hayek on liberty (3rd ed.). Routledge.
Cita Chicago (17th ed.)
Gray, John. Hayek on Liberty. 3rd ed. London ; New York: Routledge, 1998.
Cita MLA (9th ed.)
Gray, John. Hayek on Liberty. 3rd ed. Routledge, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.