APA (7th ed.) Citation

Fitzroy, R. (2007). Barometer and Weather Guide. Project Gutenberg.

Chicago Style (17th ed.) Citation

Fitzroy, Robert. Barometer and Weather Guide. Project Gutenberg, 2007.

MLA (9th ed.) Citation

Fitzroy, Robert. Barometer and Weather Guide. Project Gutenberg, 2007.

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