Becker, E. (1971). The lost science of man. G. Braziller.
Cita Chicago (17th ed.)Becker, Ernest. The Lost Science of Man. New York,: G. Braziller, 1971.
Cita MLA (8th ed.)Becker, Ernest. The Lost Science of Man. G. Braziller, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.