The Australian Unity Basis was accepted in 1958.
The terms of the Basis of Fellowship can be accessed here: Basis of Fellowship pp13-15
An extract from AACE minutes on modifications to individual ecclesia’s statements can be accessed here: AACE Minutes extract fellowship
The Basis and other relevant information was published in a booklet called Unity in Australia – The Accepted Basis which was first published in 1963 and reprinted by the AACE in 2010. This reprint can be accessed here: Unity in Australia – The Accepted Basis
The AACE offered some comments about the Unity Basis in 2005 which can be accessed here: Unity Agreement comment