United Nation's Educational, Scientific and Cultural Organization. (1971). Scientists abroad: A study of the international movement of persons in science and technology. United Nations Educational Scientific and Cultural Organization.
Dyfyniad Arddull ChicagoUnited Nation's Educational, Scientific and Cultural Organization. Scientists Abroad: A Study of the International Movement of Persons in Science and Technology. Paris: United Nations Educational Scientific and Cultural Organization, 1971.
Dyfyniad MLAUnited Nation's Educational, Scientific and Cultural Organization. Scientists Abroad: A Study of the International Movement of Persons in Science and Technology. United Nations Educational Scientific and Cultural Organization, 1971.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.