Nahin, P. J. (1998). An imaginary tale: The story of [the square root of minus one]. Princeton University Press.
Dyfyniad Arddull ChicagoNahin, Paul J. An Imaginary Tale: The Story of [the Square Root of Minus One]. Princeton, N.J.: Princeton University Press, 1998.
Dyfyniad MLANahin, Paul J. An Imaginary Tale: The Story of [the Square Root of Minus One]. Princeton University Press, 1998.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.