APA (7th ed.) Citation

Malm, W. C., & Walther, E. G. (1980). A review of instrument-measuring visibility-related variables. Environmental Monitoring Systems Laboratory, Office of Research and Development, U.S. Environmental Protection Agency.

Chicago Style (17th ed.) Citation

Malm, William C., and Eric G. Walther. A Review of Instrument-measuring Visibility-related Variables. Las Vegas, Nev.: Environmental Monitoring Systems Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, 1980.

MLA (9th ed.) Citation

Malm, William C., and Eric G. Walther. A Review of Instrument-measuring Visibility-related Variables. Environmental Monitoring Systems Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, 1980.