APA Style

et.al., H, H. (1987). General Information Programs and Abstract International Symposium on the Results of Snellius II Expedition (Jakarta-Indonesia, 23-28 November 1987) . Jakarta: Indonesian Institute of Sciences.

MLA Style

et.al., H.M.S., Hartono,. "General Information Programs and Abstract International Symposium on the Results of Snellius II Expedition (Jakarta-Indonesia, 23-28 November 1987)". Jakarta: Indonesian Institute of Sciences, 1987. Text.