Simpson, S. (1946). Belgium in transition. Philadelphia: American Academy of Political and Social Science.
Citazione stile Chigago Style (17a edizione)Simpson, Smith. Belgium in Transition. Philadelphia: American Academy of Political and Social Science, 1946.
Citatione MLA (8a ed.)Simpson, Smith. Belgium in Transition. Philadelphia: American Academy of Political and Social Science, 1946.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.