Robert J.Dixson. (1992). Modern American English: Teacher's 2. Englewood Cliffs, New Jersey: Prentice Hall.
Dyfyniad Arddull ChicagoRobert J.Dixson. Modern American English: Teacher's 2. Englewood Cliffs, New Jersey: Prentice Hall, 1992.
Dyfyniad MLARobert J.Dixson. Modern American English: Teacher's 2. Englewood Cliffs, New Jersey: Prentice Hall, 1992.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.