Fixx, J. The complete book of running (First edition.). Random House.
Dyfyniad Arddull ChicagoFixx, James.F. The Complete Book of Running. First edition. New York: Random House.
Dyfyniad MLAFixx, James.F. The Complete Book of Running. First edition. Random House.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.