(2002). Longman language activator: Helps you write and speak natural English. London: Longman.
Dyfyniad Arddull ChicagoLongman Language Activator: Helps You Write and Speak Natural English. London: Longman, 2002.
Dyfyniad MLALongman Language Activator: Helps You Write and Speak Natural English. London: Longman, 2002.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.