APA (7e ed.) Bronvermelding

Campbell, D. M. (1976). The whole craft of number. Prindle, Weber and Schmidt.

Chicago (17e ed.) Bronvermelding

Campbell, Douglas M. The Whole Craft of Number. Boston: Prindle, Weber and Schmidt, 1976.

MLA (9e ed.) Bronvermelding

Campbell, Douglas M. The Whole Craft of Number. Prindle, Weber and Schmidt, 1976.