APA (7th ed.) Citation

Gibson, W. H. (2012). Eye Spy Afield with Nature Among Flowers and Animate Things. Project Gutenberg.

Chicago Style (17th ed.) Citation

Gibson, W. Hamilton. Eye Spy Afield with Nature Among Flowers and Animate Things. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Gibson, W. Hamilton. Eye Spy Afield with Nature Among Flowers and Animate Things. Project Gutenberg, 2012.

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