Commonwealth Consolidated Acts

FAMILY LAW ACT 1975 - SECT 69Q

                   If:

                     (a)  a child is born to a woman; and

                     (b)  at any time during the period beginning not earlier than 44 weeks and ending not less than 20 weeks before the birth, the woman cohabited with a man to whom she was not married;

the child is presumed to be a child of the man.