APA (7th ed.) Citation

Hitchcock, E. (2011). The Religion of Geology and Its Connected Sciences. Project Gutenberg.

Chicago Style (17th ed.) Citation

Hitchcock, Edward. The Religion of Geology and Its Connected Sciences. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Hitchcock, Edward. The Religion of Geology and Its Connected Sciences. Project Gutenberg, 2011.

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