APA (7th ed.) Citation

(1987). Bedrock geologic map of Indiana. Geological Survey.

Chicago Style (17th ed.) Citation

Bedrock Geologic Map of Indiana. [Bloomington, Ind.]: Geological Survey, 1987.

MLA (9th ed.) Citation

Bedrock Geologic Map of Indiana. Geological Survey, 1987.

Warning: These citations may not always be 100% accurate.