APA (7th ed.) Citation

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.) Citation

Calder, 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 (8th ed.) Citation

Calder, 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.