APA (7th ed.) Citation

Northeastern Forest Experiment Station (Radnor, Pa.), United States. Forest Service, & Lewis, F. B. (1979). Observations on the use of GYPCHEK. Dept. of Agriculture, Forest Service, Northeastern Forest Experiment Station.

Chicago Style (17th ed.) Citation

Northeastern Forest Experiment Station (Radnor, Pa.), United States. Forest Service, and Franklin B. Lewis. Observations on the Use of GYPCHEK. Broomall, Pa.: Dept. of Agriculture, Forest Service, Northeastern Forest Experiment Station, 1979.

MLA (9th ed.) Citation

Northeastern Forest Experiment Station (Radnor, Pa.), et al. Observations on the Use of GYPCHEK. Dept. of Agriculture, Forest Service, Northeastern Forest Experiment Station, 1979.