Gaya APA

Dobby, G, &, R, S. (1989). Processing of Complex Ores : Proceedings of The International Symposium . United States of America: Pergamon Press.

Gaya MLA

Dobby, G.S., &, Rao,, S.R. "Processing of Complex Ores : Proceedings of The International Symposium". United States of America: Pergamon Press, 1989. Text.