APA (7th ed.) Citation

Bowker-Saur. Database Publishing Group. (1990). Who's who in European politics. Bowker-Saur.

Chicago Style (17th ed.) Citation

Bowker-Saur. Database Publishing Group. Who's Who in European Politics. London ; New York: Bowker-Saur, 1990.

MLA (9th ed.) Citation

Bowker-Saur. Database Publishing Group. Who's Who in European Politics. Bowker-Saur, 1990.