Resources on Constitutinoal law and history
Australian Constitutional law:
Quick and Garran, The Annotated Constitution of the Commonwealth of Australia, 1901 (LexisNexis)
James Edelman, Constitutional Interpretation (hcourt.gov.au)
State Constitutional law:
Greg Taylor, The Constitution of Victoria, 2006 (Federation Press)
Anne Twomey, The Constitution of New South Wales, 2004 (Federation Press)
History:
John La Nauze, The Making of the Australian Constitution, 1972 (Google Books)