APA
Melrose M., Turner P., Pitts J. & Barrett D. (2007). The impact of heavy cannabis use on young people : vulnerability and youth transitions [PDF]. London: Joseph Rowntree Foundation.
Chicago
Melrose Margaret, Turner Penny, Pitts John and Barrett David. 2007. The impact of heavy cannabis use on young people : vulnerability and youth transitions [PDF]. London: Joseph Rowntree Foundation.
Harvard
Melrose M., Turner P., Pitts J. and Barrett D. (2007). The impact of heavy cannabis use on young people : vulnerability and youth transitions [PDF]. London: Joseph Rowntree Foundation.
MLA
Melrose Margaret, Turner Penny, Pitts John and Barrett David. The impact of heavy cannabis use on young people : vulnerability and youth transitions [PDF]. London: Joseph Rowntree Foundation. 2007.
E-bron