Syntactic description and theoretical syntax are central concerns in linguistics. For thirty years, the search for a single formal model of syntax has been the central task in the field; many theories have been proposed, some discarded, none universally adopted, and the problem continues to challenge linguists.

The award-winning Encyclopedia of Language and Linguistics included many excellent articles on all major syntactic theories, current or past, written either by their originators or by eminent practitioners. These articles are now collected here in a single volume. All have...