Keyes, Katherine;
Schulenberg, John E;
Johnston, Lloyd D; Sarvet, Aaron L; Wall, Melanie M; Cerd·, Magdalena; OíMalley, Patrick M; Hasin, Deborah S. (2018).
Recent rapid decrease in adolescentsí perception that marijuana is harmful, but no concurrent increase in use. Drug and alcohol dependence. 186(1), 68-74.