APA (7th ed.) Citation

Ward, H. M. (2012). Disease in Plants. Project Gutenberg.

Chicago Style (17th ed.) Citation

Ward, H. Marshall. Disease in Plants. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Ward, H. Marshall. Disease in Plants. Project Gutenberg, 2012.

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