Jacobson, G., & Macias, L. (1971). Groundwater investigation in the Mount Hagen area, Western Highlands District. Geological Survey.
Chicago Style (17th ed.) CitationJacobson, G., and L.F Macias. Groundwater Investigation in the Mount Hagen Area, Western Highlands District. [Port Moresby]: Geological Survey, 1971.
MLA (9th ed.) CitationJacobson, G., and L.F Macias. Groundwater Investigation in the Mount Hagen Area, Western Highlands District. Geological Survey, 1971.
Warning: These citations may not always be 100% accurate.