APA (7th ed.) Citation

United States. We the people of the United States, in order to form a more perfect union, establish justice, insure domestic tranquility, provide for the common defence, promote the general welfare, and secure the blessings of liberty to ourselves and our posterity, do ordain and establish this Constitution for the United States of America.

Chicago Style (17th ed.) Citation

United States. We the People of the United States, in Order to Form a More Perfect Union, Establish Justice, Insure Domestic Tranquility, Provide for the Common Defence, Promote the General Welfare, and Secure the Blessings of Liberty to Ourselves and Our Posterity, Do Ordain and Establish This Constitution for the United States of America.

MLA (9th ed.) Citation

United States. We the People of the United States, in Order to Form a More Perfect Union, Establish Justice, Insure Domestic Tranquility, Provide for the Common Defence, Promote the General Welfare, and Secure the Blessings of Liberty to Ourselves and Our Posterity, Do Ordain and Establish This Constitution for the United States of America.

Warning: These citations may not always be 100% accurate.