Annuaire des Organisations Internationales = Yearbook of International Organizations 1956-1957 / / introduction de Et. De La Vallée Poussin ; introduction Georges Patrick Speeckaert.

MLA

Annuaire Des Organisations Internationales = Yearbook of International Organizations 1956-1957. Bruxelles: UAI, 1957.

APA

(1957). Annuaire des Organisations Internationales = Yearbook of International Organizations 1956-1957. Bruxelles: UAI.

Chicago

Annuaire Des Organisations Internationales = Yearbook of International Organizations 1956-1957. Bruxelles: UAI, 1957.