APA Style

Heymann, P, B., Brownsberger, W, N. (2001). Drug addiction and drug policy : the struggle to control dependence . Cambridge, Mass.: Harvard University Press.

MLA Style

Heymann, Philip, B.., Brownsberger, William, N.. "Drug addiction and drug policy : the struggle to control dependence". Cambridge, Mass.: Harvard University Press, 2001. Text.