Spero, J. E. (1982). The politics of international economic relations (2nd ed.). G. Allen & Unwin.
Lua i Stíl Chicago (17ú heag.)Spero, Joan Edelman. The Politics of International Economic Relations. 2nd ed. Boston: G. Allen & Unwin, 1982.
Lua MLA (9ú heag.)Spero, Joan Edelman. The Politics of International Economic Relations. 2nd ed. G. Allen & Unwin, 1982.