Belgium: bipolar and centrifugal federalism.

MLA

Alen, André. Belgium: Bipolar and Centrifugal Federalism. Brussels, 1990.

APA

Alen, A. (1990). Belgium: bipolar and centrifugal federalism. Brussels.

Chicago

Alen, André Belgium: Bipolar and Centrifugal Federalism. Brussels, 1990.