Duckworth, H. E. (1963). Little men in the unseen world: A guide to atomic physics. Macmillan.
Dyfyniad Arddull ChicagoDuckworth, Henry E. Little Men in the Unseen World: A Guide to Atomic Physics. London: Macmillan, 1963.
Dyfyniad MLADuckworth, Henry E. Little Men in the Unseen World: A Guide to Atomic Physics. Macmillan, 1963.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.