French, Margot A. “Markedness and the Acquisition of Pied-Piping and Preposition Stranding”. 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. 9, June 1986, pp. 52-64, https://conferences.lib.unb.ca/index.php/pamapla/article/view/453.