Manvell, R., & Fraenkel Heinrich. (1967). The incomparable crime: Mass extermination in the twentieth century ([1st American ed.].). Putnam.
Dyfyniad Arddull ChicagoManvell, Roger, and Fraenkel Heinrich. The Incomparable Crime: Mass Extermination in the Twentieth Century. [1st American ed.]. New York: Putnam, 1967.
Dyfyniad MLAManvell, Roger, and Fraenkel Heinrich. The Incomparable Crime: Mass Extermination in the Twentieth Century. [1st American ed.]. Putnam, 1967.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.