See this example properly formatted in the QUT Cite tool.
Standard in-text citation examples are in Getting started - In-text citation.
Party name v Party name, (Year). Volume Law report series abbreviation Starting page, Page cited.
Mabo v Queensland, (1988). 166 CLR 186, 191.
The format for a case in Harvard is based on the Bluebook.
Cases consulted online are cited as if in print, therefore a URL is not required.