Cita APA (7a ed.)

Dickens, C., & Shapiro, C. (1980). Hard times: For these times. New American Library.

Cita Chicago Style (17a ed.)

Dickens, Charles, y Charles Shapiro. Hard Times: For These Times. New York: New American Library, 1980.

Cita MLA (9a ed.)

Dickens, Charles, y Charles Shapiro. Hard Times: For These Times. New American Library, 1980.