Gaya APA

Hadamard, J. (1954). An essay on the psychology of invention in the mathematical field. Oorspr. uitg.1945. . New York: Dover publications.

Gaya MLA

Hadamard, J.. "An essay on the psychology of invention in the mathematical field. Oorspr. uitg.1945. ". New York: Dover publications, 1954. Buku.