Shaping America : U.S. history to 1877. Lesson 20, Irrepressible conflicts
MLA
Dyer, Julia. Shaping America: U.s. History to 1877. Dallas, TX: Dallas County Community College District, 2001
APA, 7th edition
Dyer, J. (2001). Shaping America: U.S. history to 1877. Dallas, TX: Dallas County Community College District
Chicago, 17th edition
Dyer, Julia. Shaping America: U.S. history to 1877. Dallas, TX: Dallas County Community College District, 2001