Foley, M., & Hall, D. (2003). Longman. Advanced learners' grammar: A self-study reference & practice book with answers. Pearson Education Limited.
Cita Chicago (17th ed.)Foley, Mark, i Diane Hall. Longman. Advanced Learners' Grammar: A Self-study Reference & Practice Book with Answers. Essex: Pearson Education Limited, 2003.
Cita MLA (9th ed.)Foley, Mark, i Diane Hall. Longman. Advanced Learners' Grammar: A Self-study Reference & Practice Book with Answers. Pearson Education Limited, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.