Platon, E. P. (1977). Difficulties encountered by grade six pupils in interpreting word problems on elementary mathematics.
Cita Chicago (17th ed.)Platon, Eufrosina Peñaflor. Difficulties Encountered by Grade Six Pupils in Interpreting Word Problems on Elementary Mathematics. 1977.
Cita MLA (9th ed.)Platon, Eufrosina Peñaflor. Difficulties Encountered by Grade Six Pupils in Interpreting Word Problems on Elementary Mathematics. 1977.
Atenció: Aquestes cites poden no estar 100% correctes.