Citazione APA

Fehr, H. F. 1. (1953). The learning of mathematics: Its theory and practice. Washington, D.C.: The Council.

Stile di citazione Chicago

Fehr, Howard Franklin 1911-. The Learning of Mathematics: Its Theory and Practice. Washington, D.C.: The Council, 1953.

Citazione MLA

Fehr, Howard Franklin 1911-. The Learning of Mathematics: Its Theory and Practice. Washington, D.C.: The Council, 1953.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.