Darke, S. (2011). The life of the heroin user: Typical beginnings, trajectories and outcomes. Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)Darke, Shane. The Life of the Heroin User: Typical Beginnings, Trajectories and Outcomes. Cambridge ; New York: Cambridge University Press, 2011.
Lua MLA (9ú heag.)Darke, Shane. The Life of the Heroin User: Typical Beginnings, Trajectories and Outcomes. Cambridge University Press, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.