Cristina Quincy Avilés

• New Go Ahead B2 Upper-intermediate Student's book + Workbook
• New Go Ahead B2 Upper-intermediate Student's book + Workbook
• New Go Ahead B2 Upper-intermediate Teacher's book
• New Go Ahead C1 Advanced Student's book + Workbook
• New Go Ahead C1 Advanced Teacher's book
• New Go Ahead C1 Advanced Teacher's book