Andrew Carnie presents Syntax: A Generative Introduction 4E. Wiley Blackwell.
Video 15.4: Empty Categories
This video compares PRO to pro, trace and IMP. All empty categories required by the EPP
Please purchase the book: https://www.wiley.com/en-us/Syntax%3A+A+Generative+Introduction%2C+4th+Edition-p-9781119569312
