Annual Report (Association for the Improvement of Geometrical Teaching). The Mathematical Association.
Chicago-čujuhus (17. p.)Annual Report (Association for the Improvement of Geometrical Teaching). The Mathematical Association.
MLA-čujuhus (9. p.)Annual Report (Association for the Improvement of Geometrical Teaching). The Mathematical Association.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.