APA aipamena

Marx,Karl, & Engels,Frederick. (1975). Collected works. Progress.

Chicago Style aipamena

Marx,Karl, and Engels,Frederick. Collected Works. Moscow: Progress, 1975.

MLA aipamena

Marx,Karl, and Engels,Frederick. Collected Works. Progress, 1975.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.