Lee, L. (1998). Transitions: Student's book. New York: Oxford University Press.
Dyfyniad Arddull ChicagoLee, Linda. Transitions: Student's Book. New York: Oxford University Press, 1998.
Dyfyniad MLALee, Linda. Transitions: Student's Book. New York: Oxford University Press, 1998.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.