Foong. New Syllabus Primary Mathematics 4A: COURSEBOOK. Shinglee Publishers.
Chicago-čujuhus (17. p.)Foong. New Syllabus Primary Mathematics 4A: COURSEBOOK. Shinglee Publishers.
MLA-čujuhus (9. p.)Foong. New Syllabus Primary Mathematics 4A: COURSEBOOK. Shinglee Publishers.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.