The tools included below are among the best web services you can find online to help with the integration of bibliography and citations into documents. They cover different style formats including APA, MLA, and Chicago.
"Thomas Jefferson's rough draft is the core document for an exploration of the antecedents to some critical phrases and concepts in the Declaration of Independence. This critical document combines Jefferson's first draft and changes made by the congressional committee appointed to draft a declaration and
then by the entire Congress."