Alexander, L. (1976). First things first student's book: An integrated course for beginners. London: Longman.
Dyfyniad Arddull ChicagoAlexander, L.G. First Things First Student's Book: An Integrated Course for Beginners. London: Longman, 1976.
Dyfyniad MLAAlexander, L.G. First Things First Student's Book: An Integrated Course for Beginners. London: Longman, 1976.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.