Chio, S. T. (1980). Difficulties in problem solving in mathematics among grade six pupils.
Cita Chicago (17th ed.)Chio, Singlee Tan. Difficulties in Problem Solving in Mathematics Among Grade Six Pupils. 1980.
Cita MLA (9th ed.)Chio, Singlee Tan. Difficulties in Problem Solving in Mathematics Among Grade Six Pupils. 1980.
Atenció: Aquestes cites poden no estar 100% correctes.