Number of items at this level: 4.
Kim, Jong-Bok and Sells, Peter
English Syntax: An Introduction.
Stanford: CSLI Publications.
Li, Defeng, ed.
An English Speaking Course for College Students.
Nanjing: Hohai University Press.
Lucas, Christopher and Willis, David
'Never again: the multiple grammaticalization of never as a
marker of negation in English.'
English Language and Linguistics, 16
Sprigg, R. K.
'The short quantity piece in English lexical items, and its vowel system.'
York Papers in Linguistics (Series 2), 4