SHUMWAY, R. J. (1980). Research in mathematic education. The National Council.
Citazione stile Chigago Style (17a edizione)SHUMWAY, Richard J. Research in Mathematic Education. Virginia: The National Council, 1980.
Citatione MLA (9a ed.)SHUMWAY, Richard J. Research in Mathematic Education. The National Council, 1980.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.