If it's harvard, a journal article reference in the references/ bibliography should be in this order
Author or authors. The surname is followed by first initials.
Year of publication of the article.
Article title (in single inverted commas).
Journal title (in italics).
Volume of journal.
Issue number of journal.
Page range of article.
here's an example:
Fox, P.F., 1993. 'Cheese: an overview'. In Cheese: chemistry, physics and microbiology (pp. 1-36). Springer, Boston, MA.
(yes I just searched up cheese in google scholar and chose the first journal article)