Cita APA (7a ed.)

Hitzler, G. (1991). Directory of European Institutions. Butterworths [etc.].

Cita Chicago Style (17a ed.)

Hitzler, Gerhard. Directory of European Institutions. London [etc.]: Butterworths [etc.], 1991.

Cita MLA (9a ed.)

Hitzler, Gerhard. Directory of European Institutions. Butterworths [etc.], 1991.