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Dyfyniad Arddull ChicagoLundin, Stephen C., Harry Paul, and John Christensen. Fish!: A Remarkable Way to Boost Morale and Improve Results. New York: Hyperion, 2000.
Dyfyniad MLALundin, Stephen C., et al. Fish!: A Remarkable Way to Boost Morale and Improve Results. Hyperion, 2000.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.