Calder, I. M., & Ramsey, J. (1987). A survey of cannabis use in offshore rig workers. British journal of addiction, 82(2), 159-162.
Chicago Style (17th ed.) CitationCalder, Ian M., and John Ramsey. "A Survey of Cannabis Use in Offshore Rig Workers." British Journal of Addiction 82, no. 2 (1987): 159-162.
MLA (9th ed.) CitationCalder, Ian M., and John Ramsey. "A Survey of Cannabis Use in Offshore Rig Workers." British Journal of Addiction, vol. 82, no. 2, 1987, pp. 159-162.
Warning: These citations may not always be 100% accurate.