Burton-Roberts, Noël, Carr, Philip and Docherty, Gerard, eds. 2000. Phonological Knowledge. Conceptual and Empirical Issues. Oxford: Oxford University Press.
Docherty, Gerard and Foulkes, Paul. 2000. “Speaker, Speech, and Knowledge of Sound.” in Phonological Knowledge. Conceptual and Empirical Issues, edited by Noël Burton-Roberts, Philip Carr, and Gerard Docherty, pp. 105–129. Oxford: Oxford University Press.