<hi xmlns="http://www.tei-c.org/ns/1.0" rend="bold" style="font-size:12pt">Biber, Douglas</hi><hi xmlns="http://www.tei-c.org/ns/1.0" style="font-size:12pt" xml:space="preserve"> (1988): </hi><hi xmlns="http://www.tei-c.org/ns/1.0" rend="italic" style="font-size:12pt">Variation across Speech and Writing</hi><hi xmlns="http://www.tei-c.org/ns/1.0" style="font-size:12pt">. Cambridge: Cambridge University Press.</hi>