What are some other heavy duty English grammar/usage references besides:
a) The Cambridge Grammar of the English Language
b) The Comprehensive Grammar of the English Language
?
How far back in time do you want to go? Apart from Quirk et al and Hudleston and Pullum the heaviest (I don’t know about duty) grammars on my shelves are:
Biber, Douglas; Johansson, Stig; Leech, Geoffrey; Conrad, Susan and Finegan, Edward (1999) Longman Grammar of Spoken and Written English, Harlow: Longman
Carter, Ronald & McCarthy, Michael (2006) Cambridge Grammar of English, Cambridge: CUP
Celce-Murcia, Marianne and Larsen-Freeman, Diane (1999)The Grammar Book , 2nd edn,,Cambridge, Mass.: Newbury House
Jespersen, Otto (1909-1949), A Modern English Grammar on Historical Principles, Copenhagen: Levin & Munksgaard, and London: George Allen & Unwin
Kruisinga, E (1909-1932 ). A Handbook of Present-Day English, Groningen: Noordhoff
Poutsma, H (1904-29) A Grammar of Late Modern English; Groningen: PNoordhof
Sweet, Henry(1891-8) A New English Grammar, Oxford: Clarendon Press