PCIJ (ser A)
What it stands for
Publications of the Permanent Court of International Justice, Series A
How to use it
Use the abbreviation as the title of the series. It is not italicised and takes no full stops.
AGLC4 marks this series as authorised. Where a case is reported in more than one series, rule 2.2.1 says to cite the authorised one.
From the appendices of the Australian Guide to Legal Citation, 4th edition · always confirm against the official guide.