Senge, P. M. (1994). The fifth discipline: The art and practice of the learning. New York: Currency Doubleday.
Dyfyniad Arddull ChicagoSenge, Peter M. The Fifth Discipline: The Art and Practice of the Learning. New York: Currency Doubleday, 1994.
Dyfyniad MLASenge, Peter M. The Fifth Discipline: The Art and Practice of the Learning. New York: Currency Doubleday, 1994.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.