About A New Reference Grammar of Modern Spanish, 5E (9781444137699):
For many years A New Reference Grammar of Modern Spanish has been considered the standard English-language reference grammar of Spanish. Authoritative and accessible, this fifth edition has been updated to include the latest research findings of the Royal Spanish Academy's official grammar book, 'La nueva gramÃ¡tica de la lengua espaÃ±ola', making this text even more relevant to students and teachers of Spanish.
CEFR Categorisation: C1 - C2
About Practising Spanish Grammar, 3E (9781444137705):
This third edition of Practising Spanish Grammar offers a wide variety of exercises that help put Spanish grammar into practice so that readers can understand how the language is used today. With its broad variety of new and revised exercises designed to stimulate and engage even the most grammar-shy students, this edition can be used independently or as the ideal companion to the widely acclaimed fifth edition of Butt and Benjamin's popular A New Reference Grammar of Modern Spanish.
CEFR Categorisation: B2 - C1