Smith, Michael. "Causes of the American Civil War: State Declarations of Secession". OER Commons. Institute for the Study of Knowledge Management in Education, 20 Oct. 2022. Web. 11 May 2024. <https://goopenva.org/authoring/188-causes-of-the-american-civil-war-state-declaration>.
Smith, M. (2022, October 20). Causes of the American Civil War: State Declarations of Secession. OER Commons. Retrieved May 11, 2024, from https://goopenva.org/authoring/188-causes-of-the-american-civil-war-state-declaration.