Cita APA
Engels, F. (2001). The Part played by labour in the transition from ape to man. Electric Book Co..
Citación estilo Chicago
Engels, Friedrich. The Part Played by Labour in the Transition from Ape to Man. London: Electric Book Co., 2001.
Cita MLA
Engels, Friedrich. The Part Played by Labour in the Transition from Ape to Man. Electric Book Co., 2001.
Warning: These citations may not always be 100% accurate.