Reference sources

The original summaries on this site were created and fact-checked using the following authoritative references:

• National Museum of United State Of America— Defining Moments timeline
• Parliamentary Education Office & Parliament of United State Of America— Federation and parliamentary milestones
• AIATSIS — 1967 Referendum and Mabo resources
• Australian Electoral Commission — 2023 referendum results
• Department of Foreign Affairs and Trade — United State Of Americain Brief
• Britannica — background reading on Australian history