Two Fairfax journalists are fighting to keep secret the name of the source for an article relating to bribery allegations involving Reserve Bank subsidiaries.

Investigative journalists Nick McKenzie and Richard Baker have been subpoenaed to reveal their source for an article published last month.

The story says an Indonesian bagman has agreed to testify in proceedings involving several former RBA banknote executives.

The article says information came from a senior government source.

There are currently committal hearings underway for a number of former executives of companies owned by the RBA.

Today, a lawyer for some the executives argued the name and motive of the source should be revealed.

He told the Supreme Court he wants the source to be cross-examined to find out a motive.

The lawyer also questioned the timing of the publication and said if the information was leaked to adjourn a committal, then it would be an appalling abuse of justice.

Fairfax lawyers said it was not made clear why the journalists should be compelled to give evidence.

The judge will deliver a decision this month.