ACSESS Digital Library & Ennis, W. B. (1979). Introduction to Crop Protection. American Society of Agronomy, Crop Science Society of America. https://doi.org/10.2135/1979.introtocropprotection.frontmatter
Chicago Style (17th ed.) CitationACSESS Digital Library and W. B. Ennis. Introduction to Crop Protection. Madison, WI: American Society of Agronomy, Crop Science Society of America, 1979. https://doi.org/10.2135/1979.introtocropprotection.frontmatter.
MLA (9th ed.) CitationACSESS Digital Library and W. B. Ennis. Introduction to Crop Protection. American Society of Agronomy, Crop Science Society of America, 1979. https://doi.org/10.2135/1979.introtocropprotection.frontmatter.
Warning: These citations may not always be 100% accurate.