Röhling, H., Gast, R. E., & Gast, R. E. (1991). A lithostratigraphic subdivision of the Lower Triassic in the Northwest German Lowlands and the German sector of the North Sea, based on gamma-ray and sonic logs. Schweizerbart.
Chicago Style (17th ed.) CitationRöhling, Heinz-Gerd, Reinhart E. Gast, and Reinhard E. Gast. A Lithostratigraphic Subdivision of the Lower Triassic in the Northwest German Lowlands and the German Sector of the North Sea, Based on Gamma-ray and Sonic Logs. Stuttgart: Schweizerbart, 1991.
MLA (9th ed.) CitationRöhling, Heinz-Gerd, et al. A Lithostratigraphic Subdivision of the Lower Triassic in the Northwest German Lowlands and the German Sector of the North Sea, Based on Gamma-ray and Sonic Logs. Schweizerbart, 1991.
Warning: These citations may not always be 100% accurate.