APA Citatie

Leaver, E. J., Elford, J., Morris, J. K., & Cohen, J. (1992). Use of general practice by intravenous heroin users on a methadone programme.

Chicago Style citaat

Leaver, E J., J. Elford, J K. Morris, en J. Cohen. Use of General Practice By Intravenous Heroin Users On a Methadone Programme. 1992.

MLA citatie

Leaver, E J., J. Elford, J K. Morris, en J. Cohen. Use of General Practice By Intravenous Heroin Users On a Methadone Programme. 1992.