Moore, T. J. (1993). Lifespan: Who lives longer-- and why. Simon & Schuster.
Dyfyniad Arddull ChicagoMoore, Thomas J. Lifespan: Who Lives Longer-- and Why. New York: Simon & Schuster, 1993.
Dyfyniad MLAMoore, Thomas J. Lifespan: Who Lives Longer-- and Why. Simon & Schuster, 1993.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.