Cita APA (7a ed.)

Acton, J. E. E. D. A., Simpson, R., Altholz, J. L., & McElrath, D. (1971). The correspondence of Lord Acton and Richard Simpson. University Press.

Cita Chicago Style (17a ed.)

Acton, John Emerich Edward Dalberg Acton, Richard Simpson, Josef Lewis Altholz, y Damian McElrath. The Correspondence of Lord Acton and Richard Simpson. Cambridge: University Press, 1971.

Cita MLA (9a ed.)

Acton, John Emerich Edward Dalberg Acton, et al. The Correspondence of Lord Acton and Richard Simpson. University Press, 1971.