Maris, A. (2016). Outcomes Upper Intermediate: Workbook Audio CD (Segunda edición.). National Geographic Learning Cengage Learning Company.
Lua i Stíl Chicago (17ú heag.)Maris, Amanda. Outcomes Upper Intermediate: Workbook Audio CD. Segunda edición. Hampshire: National Geographic Learning Cengage Learning Company, 2016.
Lua MLA (9ú heag.)Maris, Amanda. Outcomes Upper Intermediate: Workbook Audio CD. Segunda edición. National Geographic Learning Cengage Learning Company, 2016.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.