Dyfyniad APA

Bazin, A., & Boyd, E. (2008). Achieve IELTS 1: Practice test book. United Kingdom: Heinle Cengage learning.

Dyfyniad Arddull Chicago

Bazin, Anthea, và Elaine Boyd. Achieve IELTS 1: Practice Test Book. United Kingdom: Heinle Cengage learning, 2008.

Dyfyniad MLA

Bazin, Anthea, và Elaine Boyd. Achieve IELTS 1: Practice Test Book. United Kingdom: Heinle Cengage learning, 2008.

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