AMA style is widely used in medicine and the health sciences:
Also known as a permalink, a DOI, or digital object identifier, is an article's permanent online location. DOIs are used for a variety of academic and non-academic sources that are located online.
Include a DOI for all works that have a DOI. If an online work has both a DOI and a URL, include only the DOI; if the source only has a URL, include the URL.
AMA stands for American Medical Association. The AMA Manual of Style is the official style guide defining the citation rules of AMA. It is a set of rules for research papers and publications.
In AMA, you must cite sources that you have paraphrased, quoted, or consulted to write your research paper. Cite your sources in two places: