Vine, J. D., Tourtelot, E. B., & Keith, J. R. (1969). Element distribution in some trough and platform types of black shale and associated rocks: The content and association of minor elements in different black shale environments. United States Department of the Interior, Geological Survey.
Chicago Style (17th ed.) CitationVine, James David, Elizabeth B. Tourtelot, and John R. Keith. Element Distribution in Some Trough and Platform Types of Black Shale and Associated Rocks: The Content and Association of Minor Elements in Different Black Shale Environments. [Washington, D.C.]: United States Department of the Interior, Geological Survey, 1969.
MLA (9th ed.) CitationVine, James David, et al. Element Distribution in Some Trough and Platform Types of Black Shale and Associated Rocks: The Content and Association of Minor Elements in Different Black Shale Environments. United States Department of the Interior, Geological Survey, 1969.