APA (7th ed.) Citation

Unesco, Rencontres intellectuelles de Sao Paulo, & Rencontres internationales. (1956). The Old and the New World: Their cultural and moral relations. [publisher not identified].

Chicago Style (17th ed.) Citation

Unesco, Rencontres intellectuelles de Sao Paulo, and Rencontres internationales. The Old and the New World: Their Cultural and Moral Relations. [Paris]: [publisher not identified], 1956.

MLA (9th ed.) Citation

Unesco, et al. The Old and the New World: Their Cultural and Moral Relations. [publisher not identified], 1956.