MLA

of Orientalists, International Congress. International Congress of Orientalists : [Proceedings]. Kraus Reprint, 1968. https://collections.library.yale.edu/catalog/31996015.

APA, 6th edition

of Orientalists, I. C. (1968). International Congress of Orientalists : [proceedings]. [Congresses, Conference papers and proceedings]. Kraus Reprint. https://collections.library.yale.edu/catalog/31996015.