Cita APA (7a ed.)

Trebach, A. S., Friedman, M., & Szasz, T. S. (1992). Friedman & Szasz on liberty and drugs: Essays on the free market and prohibition (1. print.). Drug Policy Foundation Pr.

Cita Chicago Style (17a ed.)

Trebach, Arnold S., Milton Friedman, y Thomas S. Szasz. Friedman & Szasz on Liberty and Drugs: Essays on the Free Market and Prohibition. 1. print. Washington, DC: Drug Policy Foundation Pr, 1992.

Cita MLA (9a ed.)

Trebach, Arnold S., et al. Friedman & Szasz on Liberty and Drugs: Essays on the Free Market and Prohibition. 1. print. Drug Policy Foundation Pr, 1992.