APA (7th ed.) Citation

European Institute of Public Administration & Boer, M. d. (1997). The implementation of Schengen: First the widening, now the deepening. European Institute of Public Administration.

Chicago Style (17th ed.) Citation

European Institute of Public Administration and Monica den Boer. The Implementation of Schengen: First the Widening, Now the Deepening. Maastricht: European Institute of Public Administration, 1997.

MLA (9th ed.) Citation

European Institute of Public Administration and Monica den Boer. The Implementation of Schengen: First the Widening, Now the Deepening. European Institute of Public Administration, 1997.