APA (7th ed.) Citation

Center for Environmental Research Information (U.S.). (1992). Geographic index of environmental articles, 1990. Center for Environmental Research Information, Office of Research and Development, U.S. Environmental Protection Agency.

Chicago Style (17th ed.) Citation

Center for Environmental Research Information (U.S.). Geographic Index of Environmental Articles, 1990. Cincinnati, Ohio: Center for Environmental Research Information, Office of Research and Development, U.S. Environmental Protection Agency, 1992.

MLA (9th ed.) Citation

Center for Environmental Research Information (U.S.). Geographic Index of Environmental Articles, 1990. Center for Environmental Research Information, Office of Research and Development, U.S. Environmental Protection Agency, 1992.

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