Cita APA (7th ed.)
Barrett, D., & Veerman, P. E. (2012). Article 33: Protection from narcotic drugs and psychotropic substances. Martinus Nijhoff Publishers.
Cita Chicago (17th ed.)
Barrett, Damon, i Philip E. Veerman. Article 33: Protection from Narcotic Drugs and Psychotropic Substances. Leiden ; Boston: Martinus Nijhoff Publishers, 2012.
Cita MLA (9th ed.)
Barrett, Damon, i Philip E. Veerman. Article 33: Protection from Narcotic Drugs and Psychotropic Substances. Martinus Nijhoff Publishers, 2012.
Atenció: Aquestes cites poden no estar 100% correctes.