In the Basic Tutorial we looked at how to cite the author of a book within your text. In the Harvard system, citing a journal author follows exactly the same pattern.
Here's a quick reminder. There are two ways of citing an author:
Berg (2003) advises that people who are allergic to household pets should not keep a cat in their home...
While some commentators suggest keeping a pet can be good for you (Sable, 1995), others believe pet ownership can have detrimental effects on health (Al-Dawood, 2000; Geffray, 1999; Morrison, 2001).