APA

Conference on Arithmetic, Conference on Arithmetic, Conference on Arithmetic, Buswell G. T. & Hartung M. L. (1949). Arithmetic, 1949: papers presented at the fourth annual Conference on Arithmetic held at the University of Chicago July 6-8, 1949. Chicago: University of Chicago Press.

Chicago

Conference on Arithmetic, Conference on Arithmetic, Conference on Arithmetic, Buswell Guy T and Hartung Maurice Leslie. 1949. Arithmetic, 1949: papers presented at the fourth annual Conference on Arithmetic held at the University of Chicago July 6-8, 1949. Chicago: University of Chicago Press.

Harvard

Conference on Arithmetic, Conference on Arithmetic, Conference on Arithmetic, Buswell G. T. and Hartung M. L. (1949). Arithmetic, 1949: papers presented at the fourth annual Conference on Arithmetic held at the University of Chicago July 6-8, 1949. Chicago: University of Chicago Press.

MLA

Conference on Arithmetic, Conference on Arithmetic, Conference on Arithmetic, Buswell Guy T and Hartung Maurice Leslie. Arithmetic, 1949: papers presented at the fourth annual Conference on Arithmetic held at the University of Chicago July 6-8, 1949. Chicago: University of Chicago Press. 1949.