Case Citation - Unreported Cases
The rules for citing unreported judgments are found in AGLC 4 Rule 2.3.
There are two types of unreported judgments: those with a medium neutral citation and those without a medium neutral citation.
A medium (or media) neutral citation is a citation assigned to a case by the court, and does not include reference to a law report series. For example:

When would you cite a case using the medium neutral citation?
If a case was recently decided and has not yet been reported in in a law report series, then cite the medium neutral citation. Some cases are never published in a law report series, but are available via the court website or AustLII. In those instances, you can also cite to the medium neutral citation.
For more information about citing cases, check the Australian Guide to Legal Citation (AGLC) - Chapter 2