C1

Audible

Prepare Your C1                                  

Prosperity Education

English Master C1 Key Word Transformation: 20 practice tests for the Cambridge C1 Advanced: 200 test questions with answer keys (Cambridge C1 English) (English Edition)

Premier English Learning Publishing

English C1 Advanced and C2 Proficiency Smart Vocabulary: Important Words and Phrasal Verbs to Write and Speak like a Well-Educated Native (Complete Edition) ... English Dictionaries) (English Edition)

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)

English Grammar Revision B2-C1: Phrasal Verbs with UP and DOWN (English Edition)

Independently published

Aprobar C1-C2 inglés: Friends Miles Away (SERIE APROBAR EXÁMENES AVANZADOS DE INGLÉS (WRITING Y SPEAKING))

C1 (Advanced) ESL Reading Comprehension and Vocabulary: English Self-Study with Stories and Dialogues (Intermediate-Advanced English Reading Comprehension) (English Edition)

C1 Advanced: CAE Cambridge English Exam: Writing Samples (Cambridge English Exams Book 5) (English Edition)

Cambridge University Press

C1 Advanced 5 Student's Book with Answers with Digital Pack (CAE Practice Tests)

Independently published

C1 ADVANCED (Word Formation): 30 Practice Tests for the Cambridge Exam with Key