Dyfyniad APA

Collins Cobuild. (2012). Collins Grammar for IELTS. TP. HCM: Tổng hợp.

Dyfyniad Arddull Chicago

Collins Cobuild. Collins Grammar for IELTS. TP. HCM: Tổng hợp, 2012.

Dyfyniad MLA

Collins Cobuild. Collins Grammar for IELTS. TP. HCM: Tổng hợp, 2012.

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