Blass, L. (2000). Quest: Listening and Speaking in the Academic Work-Book 1 (Có sách). Boston: Mc GrawHill.
Dyfyniad Arddull ChicagoBlass, Laurie. Quest: Listening and Speaking in the Academic Work-Book 1 (Có Sách). Boston: Mc GrawHill, 2000.
Dyfyniad MLABlass, Laurie. Quest: Listening and Speaking in the Academic Work-Book 1 (Có Sách). Boston: Mc GrawHill, 2000.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.