APA (7th ed.) Citation

Heatlie Heath, Frisher Martin, & Hickman Matthew. (2007). Validating estimates of problematic drug use in England. BMC.

Chicago Style (17th ed.) Citation

Heatlie Heath, Frisher Martin, and Hickman Matthew. Validating Estimates of Problematic Drug Use in England. BMC, 2007.

MLA (9th ed.) Citation

Heatlie Heath, et al. Validating Estimates of Problematic Drug Use in England. BMC, 2007.