Gaya APA

(a.o)., W, T. (1989). Proceedings of The International Symposium on Computer Software in Chemical and Extractive Metallurgy. . New York: Pergamon Press.

Gaya MLA

(a.o)., W.T, Thompson. "Proceedings of The International Symposium on Computer Software in Chemical and Extractive Metallurgy.". New York: Pergamon Press, 1989. Text.