Butler, G. (1995). Manage your mind: The mental fitness guide. OUP.
Dyfyniad Arddull ChicagoButler, Gillian. Manage Your Mind: The Mental Fitness Guide. New Delhi: OUP, 1995.
Dyfyniad MLAButler, Gillian. Manage Your Mind: The Mental Fitness Guide. OUP, 1995.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.