Courant, R. a. R. H. (1946). What is mathematics? Oxford University.
Dyfyniad Arddull ChicagoCourant, Richard and Robbins Herbert. What Is Mathematics? Oxford University, 1946.
Dyfyniad MLACourant, Richard and Robbins Herbert. What Is Mathematics? Oxford University, 1946.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.