Harvard style is a set of rules for research papers and publications. It is one of the most widely used styles in the world.
In Harvard, you must cite sources that you have paraphrased, quoted, or consulted to write your research paper. Cite your sources in two places:
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.
Many of the disciplines and institutions that favor Harvard style use Cite Them Right 11th edition as their primary manual.
Cite Them Right
This is the official website for Cite Them Right.