Cita APA (7a ed.)

Marx, K., & Padover, S. K. (1979). The letters of Karl Marx (First edition.). Prentice-Hall.

Cita Chicago Style (17a ed.)

Marx, Karl, y Saul K. Padover. The Letters of Karl Marx. First edition. Englewood Cliffs, New Jersey: Prentice-Hall, 1979.

Cita MLA (9a ed.)

Marx, Karl, y Saul K. Padover. The Letters of Karl Marx. First edition. Prentice-Hall, 1979.