Sen, D. (1964). Geometry & co-ordinate Geometry. Educational Pub. Co.
Chicago-čujuhus (17. p.)Sen, D. Geometry & Co-ordinate Geometry. Bombay: Educational Pub. Co, 1964.
MLA-čujuhus (9. p.)Sen, D. Geometry & Co-ordinate Geometry. Educational Pub. Co, 1964.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.