APA
Roberts I. G., . (2005). Principles and parameters in a VSO language : a case study in Welsh. Oxford: Oxford University Press.
Chicago
Roberts Ian G, . 2005. Principles and parameters in a VSO language : a case study in Welsh. Oxford: Oxford University Press.
Harvard
Roberts I. G., . (2005). Principles and parameters in a VSO language : a case study in Welsh. Oxford: Oxford University Press.
MLA
Roberts Ian G, . Principles and parameters in a VSO language : a case study in Welsh. Oxford: Oxford University Press. 2005.