Hadamard, J. (1949). An essay on the psychology of invention in the mathematical field. Dover Publications.
Chicago-referens (17:e uppl.)Hadamard, Jacques. An Essay on the Psychology of Invention in the Mathematical Field. New York: Dover Publications, 1949.
MLA-referens (9:e uppl.)Hadamard, Jacques. An Essay on the Psychology of Invention in the Mathematical Field. Dover Publications, 1949.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.