Douglas, J. D. (1970). Freedom and Tyranny: Social Problems in a Techniology Society. Alfred. A. Knopf.
Dyfyniad Arddull ChicagoDouglas, Jack D. Freedom and Tyranny: Social Problems in a Techniology Society. New York: Alfred. A. Knopf, 1970.
Dyfyniad MLADouglas, Jack D. Freedom and Tyranny: Social Problems in a Techniology Society. Alfred. A. Knopf, 1970.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.