Dyfyniad APA

O'Sullivan, B. (2011). Language testing: Theories and practices. Basingstoke: Palgrave Macmillan.

Dyfyniad Arddull Chicago

O'Sullivan, Barry. Language Testing: Theories and Practices. Basingstoke: Palgrave Macmillan, 2011.

Dyfyniad MLA

O'Sullivan, Barry. Language Testing: Theories and Practices. Basingstoke: Palgrave Macmillan, 2011.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.