(1998). An imaginary tale: The story of [the square root of minus one] / Paul J. Nahin.
Chicago-čujuhus (17. p.)An Imaginary Tale: The Story of [the Square Root of Minus One] / Paul J. Nahin. 1998.
MLA-čujuhus (9. p.)An Imaginary Tale: The Story of [the Square Root of Minus One] / Paul J. Nahin. 1998.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.