APA (7th ed.) Citation

Bryan, A. A., & Armstrong, W. (1991). Local Climatological Data Summary: Harrisburg, Illinois, 1901-1990. Illinois State Water Survey.

Chicago Style (17th ed.) Citation

Bryan, Audrey A., and Wayne Armstrong. Local Climatological Data Summary: Harrisburg, Illinois, 1901-1990. Illinois State Water Survey, 1991.

MLA (9th ed.) Citation

Bryan, Audrey A., and Wayne Armstrong. Local Climatological Data Summary: Harrisburg, Illinois, 1901-1990. Illinois State Water Survey, 1991.

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