APA (7th ed.) Citation

Sargent, F. L., Wells, S. R., & Treat, M. (2011). Through a Microscope Something of the Science Together with many Curious Observations Indoor and Out and Directions for a Home-made Microscope. Project Gutenberg.

Chicago Style (17th ed.) Citation

Sargent, Frederick Leroy, Samuel R. Wells, and Mary Treat. Through a Microscope Something of the Science Together with Many Curious Observations Indoor and Out and Directions for a Home-made Microscope. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Sargent, Frederick Leroy, et al. Through a Microscope Something of the Science Together with Many Curious Observations Indoor and Out and Directions for a Home-made Microscope. Project Gutenberg, 2011.

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