Duhigg, C. (2012). The power of habit. Random House Books on Tape.
Dyfyniad Arddull ChicagoDuhigg, Charles. The Power of Habit. New York, N.Y: Random House Books on Tape, 2012.
Dyfyniad MLADuhigg, Charles. The Power of Habit. Random House Books on Tape, 2012.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.