Semilla, L. V. Moves and strategies in a principle venture in secondary school mathematics.
Chicago-referens (17:e uppl.)Semilla, Lilia V. Moves and Strategies in a Principle Venture in Secondary School Mathematics. Illinois: University of Illinois, 1971.
MLA-referens (9:e uppl.)Semilla, Lilia V. Moves and Strategies in a Principle Venture in Secondary School Mathematics.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.