Carlile, J.C., Digdowirogo, S., and Darius, K., 1990, Geologic setting, characteristics, and regional exploration for gold in the volcanic arcs of North Sulawesi, Indonesia, in Hedenquist, J.W., White, N.C., and Siddeley, G., eds., Epithermal gold mineralization of the circum-PacificGeology, geochemistry, origin and exploration: Journal of Geochemical Exploration, v. 35, p. 105140. (Also available at http://dx.doi.org/10.1016/0375-6742(90)90037-B.)Djaswadi, S., 1993, Prospective of base metal minerals in Indonesia: Bandung, Indonesia Ministry of Mines and Energy of Republic, Directorate of Mineral Resources Special Publication, 229 p.
Lubis, H., Prihatmoko, S., and James, L.P., 1994, Bulagidun prospectA copper, gold and tourmaline bearing porphyry and breccia system in northern Sulawesi, Indonesia: Journal of Geochemical Exploration, v. 50, p.257278. (Also available at http://dx.doi.org/10.1016/0375-6742(94)90027-2.)Pearson, D.F., and Caira, N.M., 1999, The geology and metallogeny of central-north Sulawesi, in Weber, Graeme, ed., PACRIM 99 CongressInternational Congress on Earth Science, Exploration and Mining around the Pacific Rim, Bali, Indonesia, October 1013, 1999, Proceedings: Carlton, Australia, Australasian Institute of Mining and Metallurgy Publication Series no. 4/99, p. 311326.
Singer, D.A., Berger, V.I., and Moring, B.C., 2008, Porphyry copper deposits of the worldDatabase and grade and tonnage models, 2008: U.S. Geological Survey Open-File Report 2008-1155, [45] p. and digital data, accessed December 31, 2013, at http://pubs.usgs.gov/of/2008/1155/.Taylor, D., and van Leeuwen, T.M., 1980, Porphyry-type deposits in southeast Asia, in lshihara, S., and Takenouchi, S., eds., Granitic magmatism and related mineralization: Mining Geology Special Issue, v. 8, p. 95116.
van Leeuwen, T.M., 1994, 25 years of mineral exploration and discovery in Indonesia: Journal of Geochemical Exploration, v. 50, p. 1390. (Also available at http://dx.doi.org/10.1016/0375-6742(94)90021-3.)