Não informado. (1908). The Mathematics Teacher. National Council of Teachers of Mathematics.
Style de citation Chicago (17e éd.)Não informado. The Mathematics Teacher. Reston, Va: National Council of Teachers of Mathematics, 1908.
Style de citation MLA (8e éd.)Não informado. The Mathematics Teacher. National Council of Teachers of Mathematics, 1908.
Attention : ces citations peuvent ne pas être correctes à 100%.