(1945). The rôle of mathematics in consumer education, a statement prepared for the Consumer education study of the National association of secondary- school principals by the Commission on post-war plans of the National council of teachers of mathematics.
Lua i Stíl Chicago (17ú heag.)The Rôle of Mathematics in Consumer Education, a Statement Prepared for the Consumer Education Study of the National Association of Secondary- School Principals by the Commission on Post-war Plans of the National Council of Teachers of Mathematics. 1945.
Lua MLA (9ú heag.)The Rôle of Mathematics in Consumer Education, a Statement Prepared for the Consumer Education Study of the National Association of Secondary- School Principals by the Commission on Post-war Plans of the National Council of Teachers of Mathematics. 1945.