• 

  Vrijheid en onfeilbaarheid, redevoering - Cornelis Willem Opzoomer - Google Books

  http://books.google.de/books?id=ynxWAAAAcAAJ

  Keine Beschreibung vorhanden.

• 

  The Polarity Items Bibliography

  http://www.english-linguistics.de/sfb441/a5/pib/XML2HTML/list.html

  Alphabetical list of publications on Negative Polarity Items

---

---