Pyrkosch, Moritz Felicitas, Leonard Ernst, and Antonia Bendau Petzold. “Impact of Drug Abuse on Performance of Gymnasium Students in Germany”. Journal of Education 5, no. 1 (January 11, 2022): 1–10. Accessed July 22, 2025. https://stratfordjournalpublishers.org/journals/index.php/journal-of-education/article/view/1025.