English C1 Self Study

Cambridge University Press

English Grammar in Use Book with Answers and Interactive eBook: A Self-study Reference and Practice Book for Intermediate Learners of English [Lingua inglese]

Future House Languages

Activate Advanced C1 - A Complete Self-Study Course: Improve your English level in all the skills and pass your Cambridge C1, IELTS, Trinity or TOEFL exam. (Activate Your English™) (English Edition)

Cambridge University Press

English Unlimited. Level C1 Self-study Pack      

Independently published

A Study in Scarlet (English C1)                  

Next Level English C1 Advanced: 50 lessons to improve your English conversation: Real-world vocabulary and grammar for speaking success (English Edition)

How To English: 31 Days to be an independent learner (English Edition)

Demetra

Improve your English livello B2                  

Independently published

67 ESL Conversation Topics with Questions, Vocabulary, Writing Prompts & More:: For Teenagers and Adults: 3

PODIPRINT

Reading CAE: Eight practice tests for the Cambridge C1 Advanced

CAMBRIDGE

C1 Advanced. Authentic Examination Papers. C1 Advanced 4. Student's Book with Answers. Per le Scuole superiori. Con espansione online. Con Audio: Authentic Practice Tests