APA Style

Conference, A, P, W, S, S. (1991). Proceedings of the Thirteenth Asian Pacific Weed Science Society Conference . Jakarta: Asian Pacific Weed Science Society and Weed Science Society of Indonesia.

MLA Style

Conference, ASIAN, Pacific, Weed, Science, Society. "Proceedings of the Thirteenth Asian Pacific Weed Science Society Conference". Jakarta: Asian Pacific Weed Science Society and Weed Science Society of Indonesia, 1991. Electronic resources.