APA (7th ed.) Citation

Schmidt, G. (2001). A history of NATO: The first fifty years 1. A history of NATO.

Chicago Style (17th ed.) Citation

Schmidt, Gustav. "A History of NATO: The First Fifty Years 1." A History of NATO 2001.

MLA (8th ed.) Citation

Schmidt, Gustav. "A History of NATO: The First Fifty Years 1." A History of NATO, 2001.