APA (7th ed.) Citation

Vree, J. K. d. (1972). Political integration: The formation of theory and its problems. Mouton.

Chicago Style (17th ed.) Citation

Vree, Johan K. de. Political Integration: The Formation of Theory and Its Problems. The Hague: Mouton, 1972.

MLA (9th ed.) Citation

Vree, Johan K. de. Political Integration: The Formation of Theory and Its Problems. Mouton, 1972.