Cita APA (7a ed.)

Somers, F., & Stone, I. (1997). European Union Economies: A comparative study in economic integration (3rd ed.). Longman.

Cita Chicago Style (17a ed.)

Somers, Frans, y Ian Stone. European Union Economies: A Comparative Study in Economic Integration. 3rd ed. New York: Longman, 1997.

Cita MLA (9a ed.)

Somers, Frans, y Ian Stone. European Union Economies: A Comparative Study in Economic Integration. 3rd ed. Longman, 1997.