Cita APA (7a ed.)

Geological Survey (U.S.). Cross sections on the lines A-A. B-B: Showing geological structure of the black and grand prairies. U. S. Geological Survey.

Cita Chicago Style (17a ed.)

Geological Survey (U.S.). Cross Sections on the Lines A-A. B-B: Showing Geological Structure of the Black and Grand Prairies. [Baltimore]: U. S. Geological Survey.

Cita MLA (9a ed.)

Geological Survey (U.S.). Cross Sections on the Lines A-A. B-B: Showing Geological Structure of the Black and Grand Prairies. U. S. Geological Survey.