APA

Clark S. H. B., Spanski G. T., Hadley D. G., Hofstra A. H. & United States Geological Survey. (1993). Geology and mineral resource potential of the Chattanooga 1°x2° quadrangle, Tennessee and North Carolina. [Washington]: United States Government Printing Office.

Chicago

Clark Sandra H B, Spanski Gregory T, Hadley Donald G, Hofstra Albert H and United States Geological Survey. 1993. Geology and mineral resource potential of the Chattanooga 1°x2° quadrangle, Tennessee and North Carolina. [Washington]: United States Government Printing Office.

Harvard

Clark S. H. B., Spanski G. T., Hadley D. G., Hofstra A. H. and United States Geological Survey. (1993). Geology and mineral resource potential of the Chattanooga 1°x2° quadrangle, Tennessee and North Carolina. [Washington]: United States Government Printing Office.

MLA

Clark Sandra H B, Spanski Gregory T, Hadley Donald G, Hofstra Albert H and United States Geological Survey. Geology and mineral resource potential of the Chattanooga 1°x2° quadrangle, Tennessee and North Carolina. [Washington]: United States Government Printing Office. 1993.