National Research Council. (1943). Psychology for the fighting man. The Infantry Journal.
Dyfyniad Arddull ChicagoNational Research Council. Psychology for the Fighting Man. Washington: The Infantry Journal, 1943.
Dyfyniad MLANational Research Council. Psychology for the Fighting Man. The Infantry Journal, 1943.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.