Παραπομπή σε μορφή APA (7η εκδ.)

Williams, G. L., & Jones, B. J. (2001). NATO and the transatlantic alliance in the 21st century: The twenty-years crisis. Palgrave.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Williams, Geoffrey Lee, και Barkley Jared Jones. NATO and the Transatlantic Alliance in the 21st Century: The Twenty-years Crisis. Hampshire: Palgrave, 2001.

Παραπομπή σε μορφή MLA (9th εκδ.)

Williams, Geoffrey Lee, και Barkley Jared Jones. NATO and the Transatlantic Alliance in the 21st Century: The Twenty-years Crisis. Palgrave, 2001.