Force, E. R., Djaswadi, S., Leeuwen, T. v., & Lynd, L. E. (1984). Exploration for porphyry metal deposits based on rutile distribution-- a test in Sumatera: A new exploration tool for porphyry deposits in the tropics. Department of the Interior, U.S. Geological Survey.
Chicago Style (17th ed.) CitationForce, Eric R., Sukirno Djaswadi, Theo van Leeuwen, and Langtry E. Lynd. Exploration for Porphyry Metal Deposits Based on Rutile Distribution-- a Test in Sumatera: A New Exploration Tool for Porphyry Deposits in the Tropics. [Reston, Va.]: Department of the Interior, U.S. Geological Survey, 1984.
MLA (9th ed.) CitationForce, Eric R., et al. Exploration for Porphyry Metal Deposits Based on Rutile Distribution-- a Test in Sumatera: A New Exploration Tool for Porphyry Deposits in the Tropics. Department of the Interior, U.S. Geological Survey, 1984.