Cita APA (7a ed.)
Griffiths, M., O'Callaghan, T., & Roach, S. C. (2008). International relations: <the> key concepts (2nd ed.). Routledge.
Cita Chicago Style (17a ed.)
Griffiths, Martin, Terry O'Callaghan, y Steven C. Roach. International Relations: <the> Key Concepts. 2nd ed. London: Routledge, 2008.
Cita MLA (9a ed.)
Griffiths, Martin, et al. International Relations: <the> Key Concepts. 2nd ed. Routledge, 2008.
Precaución: Estas citas no son 100% exactas.