Platon, E. P. (1977). Difficulties encountered by grade six pupils in interpreting word problems on elementary mathematics.
Chicago-referens (17:e uppl.)Platon, Eufrosina Peñaflor. Difficulties Encountered by Grade Six Pupils in Interpreting Word Problems on Elementary Mathematics. 1977.
MLA-referens (9:e uppl.)Platon, Eufrosina Peñaflor. Difficulties Encountered by Grade Six Pupils in Interpreting Word Problems on Elementary Mathematics. 1977.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.