APA (7th ed.) Citation

Ridgway, J. L. (2013). The Preparation of Illustrations for Reports of the United States Geological Survey With Brief Descriptions of Processes of Reproduction. Project Gutenberg.

Chicago Style (17th ed.) Citation

Ridgway, John L. The Preparation of Illustrations for Reports of the United States Geological Survey With Brief Descriptions of Processes of Reproduction. Project Gutenberg, 2013.

MLA (9th ed.) Citation

Ridgway, John L. The Preparation of Illustrations for Reports of the United States Geological Survey With Brief Descriptions of Processes of Reproduction. Project Gutenberg, 2013.

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