Não informado. (1960). International Bibliography of the Social Sciences. Unesco, International Committee for Social Sciences Documentation.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. International Bibliography of the Social Sciences. Paris: Unesco, International Committee for Social Sciences Documentation, 1960.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. International Bibliography of the Social Sciences. Unesco, International Committee for Social Sciences Documentation, 1960.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.