Cita APA (7a ed.)

Birke, W., & Leibholz, G. (1961). European elections by direct suffrage: A comparative study of the electoral systems used in Western Europe and their utility for the direct election of a European Parliament. Sythoff.

Cita Chicago Style (17a ed.)

Birke, Wolfgang, y Gerhard Leibholz. European Elections by Direct Suffrage: A Comparative Study of the Electoral Systems Used in Western Europe and Their Utility for the Direct Election of a European Parliament. Leiden: Sythoff, 1961.

Cita MLA (9a ed.)

Birke, Wolfgang, y Gerhard Leibholz. European Elections by Direct Suffrage: A Comparative Study of the Electoral Systems Used in Western Europe and Their Utility for the Direct Election of a European Parliament. Sythoff, 1961.