Cita APA (7a ed.)

Gstöhl, S., & Schunz, S. (2021). The external action of the European Union: Concepts, approaches, theories. Macmillan Education.

Cita Chicago Style (17a ed.)

Gstöhl, Sieglinde, y Simon Schunz. The External Action of the European Union: Concepts, Approaches, Theories. London: Macmillan Education, 2021.

Cita MLA (9a ed.)

Gstöhl, Sieglinde, y Simon Schunz. The External Action of the European Union: Concepts, Approaches, Theories. Macmillan Education, 2021.