1. Dixon, R.M. W. (2010). Basic linguistic theory. Volume I: Methodology (Vol. 1). Oxford, U.K.: Oxford University Press.
2. Filiaci, F. (2010). Null and overt subject biases in Spanish and Italian: a cross-linguistic comparison. In C. Borgonovo, M. Espanol-Echevarria, & P. Prevost (Eds.), Selected Proceedings of the 12th Hispanic Linguistics Symposium. (pp. 171-182). Cascadilla Press.
3. Geber, D. (2006). Processing subject pronouns in relation to non-canonical (quirky) constructions, CLO/OPL, 34, 47-61.