Marx, K. (1992). Early writings. Penguin Books.
Cita Chicago Style (17a ed.)Marx, Karl. Early Writings. New York: Penguin Books, 1992.
Cita MLA (9a ed.)Marx, Karl. Early Writings. Penguin Books, 1992.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.