Useful reference texts for AS/A2 English Language

The list author says:
	"This is Crystal's other encyclopaedia - about language in general rather than specific to English - equally fascinating."

The list author says:
	"You get a book and searchable CD-ROM for your money - very useful tool."

The list author says:
	"Grammar made as simple and accessible as possible."

The list author says:
	"You can get an A-Z thesaurus but Roget's is still the dog's biscuits"

The list author says:
	"In case you're really stressing about your g&p"

The list author says:
	"In case you need to look up some word your teacher thinks is still hip..."

The list author says:
	"Quite advanced but handy for looking up new language concepts you come across in your reading"

The list author says:
	"Brilliant book - A-Z compedium of very useful information"

The list author says:
	"If you're studying AS/A2 English Language, you gotta have a big dictionary.  This is the one I use..."