APA (7th ed.) Citation

Green, D. W., & Kretschmann, D. E. (1990). Stress class systems: An idea whose time has come? U.S Dept. of Agriculture, Forest Service, Forest Products Laboratory.

Chicago Style (17th ed.) Citation

Green, David W., and David E. Kretschmann. Stress Class Systems: An Idea Whose Time Has Come? Madison, WI: U.S Dept. of Agriculture, Forest Service, Forest Products Laboratory, 1990.

MLA (9th ed.) Citation

Green, David W., and David E. Kretschmann. Stress Class Systems: An Idea Whose Time Has Come? U.S Dept. of Agriculture, Forest Service, Forest Products Laboratory, 1990.