Short bibliographyGrammarsAlarcos Llorach, Emilio, Gramática de la lengua española, Real Academia Española, Madrid: Espasa, 2003 (Very comprehensive but for Spanish speakers, and not presented in tabular form so finding what you want can be time consuming.)
Butt, J., Spanish Grammar, Oxford: Oxford University Press, 2000
Butt, and Benjamin, , A New Reference Grammar of Modern Spanish, London: Arnold, 2001 (Very comprehensive and for the most advanced students among you.)
Kattán-Ibarra, and Pountain, , Modern Spanish Grammar, London: Routledge, 1997
Maqueo, Ana María, Español para extranjeros (3 volumes), México: Limusa, Noriega Editores, 2002 (Excellent work but very diffuse, presented from a Mexican point of view, and in this sense very useful, notably for North American speakers of English.)
Verb formsKendris, , 501 Spanish Verbs, New York: Barron's Educational Series, 2000
Rosario Hollis, María, Spanish Verbs, Teach Yourself Books, London: Hodder and Stoughton, 1994
UsageBatchelor, R. and Pountain, C.,Using Spanish, Cambridge: Cambridge University Press, 1994; 2nd edition, 2005 (This book has a concise section on Spanish grammar but also includes numerous chapters on vocabulary and the way the language is used. This includes register, or levels of language.)
DictionariesThe Oxford Spanish Dictionary, Oxford / New York: Oxford University Press, 2000 (Excellent coverage of Spanish American, but you need to be a little wary since Spanish American is so diffuse.)
Spanish English English Spanish Dictionary, Glasgow: Harper Collins, 2001 (Every bit as good as the dictionary above.)
Simon and Schuster Spanish–English English–Spanish Dictionary, New York: Simon and Schuster, 1998 (Again, as good as the two above.)
Larousse Gran Diccionario, Español–Francés Français–Espagnol, Barcelona: Larousse, 2002 (Very good dictionary but not so comprehensive as the three above. However, it is extremely helpful for those of you who are aspiring to two languages or more.)