National Society for the Study of Education (U.S.), Henry, N. B., & Buswell, G. T. (1951). The Teaching of arithmetic. National Society for the Study of Education : Distributed by the University of Chicago Press.
Citação do estilo Chicago (17ª ed.)National Society for the Study of Education (U.S.), Nelson B. Henry, e Guy T. Buswell. The Teaching of Arithmetic. Chicago: National Society for the Study of Education : Distributed by the University of Chicago Press, 1951.
Citação MLA (8ª ed.)National Society for the Study of Education (U.S.), et al. The Teaching of Arithmetic. National Society for the Study of Education : Distributed by the University of Chicago Press, 1951.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.