Cita APA (7a ed.)
Kokkevi, A., & et al. Polydrug use by European adolescents in the context of other problem behaviours. https://doi.org/10.2478/nsad-2014-0026
Cita Chicago Style (17a ed.)
Kokkevi, A., y et al. Polydrug Use by European Adolescents in the Context of Other Problem Behaviours. https://doi.org/10.2478/nsad-2014-0026.
Cita MLA (9a ed.)
Kokkevi, A., y et al. Polydrug Use by European Adolescents in the Context of Other Problem Behaviours. https://doi.org/10.2478/nsad-2014-0026.
Precaución: Estas citas no son 100% exactas.