Educational Research Council of America. Social Science Staff. (1977). Nations in action: International tensions. Allyn a. Bacon.
Citazione stile Chigago Style (17a edizione)Educational Research Council of America. Social Science Staff. Nations in Action: International Tensions. Boston [u.a.]: Allyn a. Bacon, 1977.
Citatione MLA (9a ed.)Educational Research Council of America. Social Science Staff. Nations in Action: International Tensions. Allyn a. Bacon, 1977.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.