Aragones, L. and Palencia, R. (2014a) McGraw-Hill Education Beginning Spanish Grammar. McGraw-Hill Education - Europe.
Aragones, L. and Palencia, R. (2014b) McGraw-Hill Education Beginning Spanish Grammar. McGraw-Hill Education - Europe.
Aragones, L. and Palencia, R. (2014c) McGraw-Hill Education Intermediate Spanish Grammar. McGraw-Hill Education - Europe.
Aragones, L. and Palencia, R. (2014d) McGraw-Hill Education Intermediate Spanish Grammar. McGraw-Hill Education - Europe.
Collins Spanish Dictionary & Grammar. 8th Edition (2018). Glasgow: HarperCollins Publishers.
Galimberti Jarman, B. et al. (2008) The Oxford Spanish Dictionary: Spanish-English, English-Spanish. 4th Edition. New York: Oxford University Press Inc.
Nissenberg, G. (2016) Complete Spanish Grammar. 3rd Edition. New York: McGraw-Hill Education.
Pinilla, R. and San Mateo, A. (2016a) El Expres: Exercises Book Levels A1, A2, B1: Curso Intensivo de Espanol. Alcobendas (Madrid): SGEL.
Pinilla, R. and San Mateo, A. (2016b) ELExprés: Curso Intensivo De Español. Alcobendas (Madrid): SGEL.
Richmond, D.D. (2015) Spanish Verb Tenses. 3rd Edition. New York: McGraw Hill Education.
Six, A.L. (2001a) Upgrade Your Spanish. London: Arnold.
Six, A.L. (2001b) Upgrade Your Spanish. London: Arnold. Available at: https://ebookcentral.proquest.com/lib/rhul/detail.action?docID=581413.