Lehto, O. (1998). Mathematics without borders: A history of the International Mathematical Union. Springer.
Dyfyniad Arddull ChicagoLehto, Olli. Mathematics Without Borders: A History of the International Mathematical Union. New York: Springer, 1998.
Dyfyniad MLALehto, Olli. Mathematics Without Borders: A History of the International Mathematical Union. Springer, 1998.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.