Não informado. (1946). Information Circular. Missouri Geological Survey and Water Resources.
Style de citation Chicago (17e éd.)Não informado. Information Circular. Rolla, Mo: Missouri Geological Survey and Water Resources, 1946.
Style de citation MLA (8e éd.)Não informado. Information Circular. Missouri Geological Survey and Water Resources, 1946.
Attention : ces citations peuvent ne pas être correctes à 100%.