APA (7th ed.) Citation

S, M., V, S., O, C., F, D., S, S., & F, M. (2011). Illegal substance use among Italian high school students: Trends over 11 years (1999-2009). PloS one, 6(6), e20482. https://doi.org/10.1371/journal.pone.0020482

Chicago Style (17th ed.) Citation

S, Molinaro, Siciliano V, Curzio O, Denoth F, Salvadori S, and Mariani F. "Illegal Substance Use Among Italian High School Students: Trends over 11 Years (1999-2009)." PloS One 6, no. 6 (2011): e20482. https://doi.org/10.1371/journal.pone.0020482.

MLA (9th ed.) Citation

S, Molinaro, et al. "Illegal Substance Use Among Italian High School Students: Trends over 11 Years (1999-2009)." PloS One, vol. 6, no. 6, 2011, p. e20482, https://doi.org/10.1371/journal.pone.0020482.