APA (7th ed.) Citation

National Pesticide Information Retrieval System (U.S.). (1992). Federally registered pesticides. Gresham Trade Directories.

Chicago Style (17th ed.) Citation

National Pesticide Information Retrieval System (U.S.). Federally Registered Pesticides. Port Huron, MI: Gresham Trade Directories, 1992.

MLA (9th ed.) Citation

National Pesticide Information Retrieval System (U.S.). Federally Registered Pesticides. Gresham Trade Directories, 1992.

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