APA (7th ed.) Citation

Barrett, S. P., Darredeau, C., & Pihl, R. O. (2006). Patterns of simultaneous polysubstance use in drug using university students. Human Psychopharmacology: Clinical & Experimental, 21(4), 255. https://doi.org/10.1002/hup.766

Chicago Style (17th ed.) Citation

Barrett, Sean P., Christine Darredeau, and Robert O. Pihl. "Patterns of Simultaneous Polysubstance Use in Drug Using University Students." Human Psychopharmacology: Clinical & Experimental 21, no. 4 (2006): 255. https://doi.org/10.1002/hup.766.

MLA (9th ed.) Citation

Barrett, Sean P., et al. "Patterns of Simultaneous Polysubstance Use in Drug Using University Students." Human Psychopharmacology: Clinical & Experimental, vol. 21, no. 4, 2006, p. 255, https://doi.org/10.1002/hup.766.