Halacy, D. S. (1967). Lucky accidents in science. Dell Publishing.
Dyfyniad Arddull ChicagoHalacy, Daniel Stephen. Lucky Accidents in Science. Nueva York: Dell Publishing, 1967.
Dyfyniad MLAHalacy, Daniel Stephen. Lucky Accidents in Science. Dell Publishing, 1967.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.