Zobl, Helmut. “Second Language Acquisition and Language Change: Some Correspondences Between Structural Changes in the Evolution of English and in the Acquisition of English by a German-Speaking Child”. Papers from the Annual Meetings of the Atlantic Provinces Linguistic Association (PAMAPLA) ACTES DES COLLOQUES ANNUELS DE L’ASSOCIATION DE LINGUISTIQUE DES PROVINCES ATLANTIQUES (ACAALPA)., vol. 2, June 1979, pp. 73-98, https://conferences.lib.unb.ca/index.php/pamapla/article/view/564.