Kahn, H. (1984). Thinking about the unthinkable in the 1980s. Simon and Schuster.
Dyfyniad Arddull ChicagoKahn, Herman. Thinking About the Unthinkable in the 1980s. New York: Simon and Schuster, 1984.
Dyfyniad MLAKahn, Herman. Thinking About the Unthinkable in the 1980s. Simon and Schuster, 1984.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.