Aish, F., & Tomlinson, J. (2019). Listening for IELTS (Second edition.). Collins.
Chicago Style (17th ed.) ZitazioaAish, Fiona, eta Jo Tomlinson. Listening for IELTS. Second edition. Glasgow: Collins, 2019.
MLA (9th ed.) ZitazioaAish, Fiona, eta Jo Tomlinson. Listening for IELTS. Second edition. Collins, 2019.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.