Cita APA (7a ed.)

Graebner, N. A., Craven, A., Fehrenbacher, D. E., Baringer, W. E., & Johannsen, R. W. (1961). Politics and the crisis of 1860. University of Illinois.

Cita Chicago Style (17a ed.)

Graebner, Norman A., Avery Craven, Don E. Fehrenbacher, William E. Baringer, y Robert W. Johannsen. Politics and the Crisis of 1860. Urbana: University of Illinois, 1961.

Cita MLA (9a ed.)

Graebner, Norman A., et al. Politics and the Crisis of 1860. University of Illinois, 1961.