Highlight, take notes, and otherwise mark up articles from quality sources. Whenever you quote or paraphrase any content, be sure to give credit to the authors.
References page example - the above source in APA style:
Axelerad, A. D., Muja, L. F., Stroe, A. Z., Zlotea, L. A., Sirbu, C. A., Docu Axelerad, S., Jianu, D. C., Frecus, C. E., & Mihai, C. M. (2022). Impact of SARS-CoV-2 Infection in Patients with Neurological Pathology. Diagnostics (2075-4418), 12(2), 473. https://doi.org/10.3390/diagnostics12020473
If you are looking for the specific type of article known as a case study, one easy way of finding the most useful articles is to include "case study" as one of your search terms. Note: this example limited the search to articles in which "case study" is the subject, for greater accuracy.
The "medical ethics" search within SAGE reference draws from eReference entries like this one.