Cita APA (7a ed.)

Tocqueville, A. d., & Heffner, R. D. (1956). Democracy in America. New American Library.

Cita Chicago Style (17a ed.)

Tocqueville, Alexis de, y Richard D. Heffner. Democracy in America. New York [etc.]: New American Library, 1956.

Cita MLA (9a ed.)

Tocqueville, Alexis de, y Richard D. Heffner. Democracy in America. New American Library, 1956.