APA (7th ed.) Citation

Martens, D. G., Whitenack, K. R., Nevel, R. L., & Northeastern Forest Experiment Station. (1986). OPTIGRAMI users manual. U.S. Dept. of Agriculture, Forest Service, Northeastern Forest Experiment Station.

Chicago Style (17th ed.) Citation

Martens, David G., Kenneth R. Whitenack, Robert L. Nevel, and Northeastern Forest Experiment Station. OPTIGRAMI Users Manual. U.S. Dept. of Agriculture, Forest Service, Northeastern Forest Experiment Station, 1986.

MLA (8th ed.) Citation

Martens, David G., et al. OPTIGRAMI Users Manual. U.S. Dept. of Agriculture, Forest Service, Northeastern Forest Experiment Station, 1986.