Joseph B. W. Yeo. New Syllabus Mathematics: COURSEBOOK. Shinglee Publishers.
Chicago-čujuhus (17. p.)Joseph B. W. Yeo. New Syllabus Mathematics: COURSEBOOK. Shinglee Publishers.
MLA-čujuhus (9. p.)Joseph B. W. Yeo. New Syllabus Mathematics: COURSEBOOK. Shinglee Publishers.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.