Cita APA (7th ed.)
ebrary, Inc, & Williams, H. G. (2009). National drug control strategy. Nova Science Publishers.
Cita Chicago (17th ed.)
ebrary, Inc, i Heather G. Williams. National Drug Control Strategy. New York: Nova Science Publishers, 2009.
Cita MLA (9th ed.)
ebrary, Inc, i Heather G. Williams. National Drug Control Strategy. Nova Science Publishers, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.