Cita APA (7a ed.)

Pijpers, A., Regelsberger, E., Wessels, W., Edwards, G., & Scheel, W. (1988). European Political Cooperation in the 1980s: A common foreign policy for Western Europe? Martinus Nijhoff [etc.].

Cita Chicago Style (17a ed.)

Pijpers, Alfred, Elfriede Regelsberger, Wolfgang Wessels, Geoffrey Edwards, y Walter Scheel. European Political Cooperation in the 1980s: A Common Foreign Policy for Western Europe? Dordrecht [etc.]: Martinus Nijhoff [etc.], 1988.

Cita MLA (9a ed.)

Pijpers, Alfred, et al. European Political Cooperation in the 1980s: A Common Foreign Policy for Western Europe? Martinus Nijhoff [etc.], 1988.