APA (7th ed.) Citation

Gregoire, T. G., & Buhyoff, G. J. (1999). Sampling and estimating recreational use. U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station.

Chicago Style (17th ed.) Citation

Gregoire, T. G., and Gregory J. Buhyoff. Sampling and Estimating Recreational Use. Portland, OR: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1999.

MLA (9th ed.) Citation

Gregoire, T. G., and Gregory J. Buhyoff. Sampling and Estimating Recreational Use. U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1999.