APA (7th ed.) Citation

Warren, H. W. (2005). Recreations in Astronomy With Directions for Practical Experiments and Telescopic Work. Project Gutenberg.

Chicago Style (17th ed.) Citation

Warren, Henry White. Recreations in Astronomy With Directions for Practical Experiments and Telescopic Work. Project Gutenberg, 2005.

MLA (9th ed.) Citation

Warren, Henry White. Recreations in Astronomy With Directions for Practical Experiments and Telescopic Work. Project Gutenberg, 2005.

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