APA (7th ed.) Citation

Hoff, R. J., & McDonald, G. I. (1977). Differential susceptibility of 19 white pine species to woolly aphid (Pineus coloradensis). Dept. of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station.

Chicago Style (17th ed.) Citation

Hoff, R. J., and G. I. McDonald. Differential Susceptibility of 19 White Pine Species to Woolly Aphid (Pineus Coloradensis). Ogden Utah: Dept. of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station, 1977.

MLA (9th ed.) Citation

Hoff, R. J., and G. I. McDonald. Differential Susceptibility of 19 White Pine Species to Woolly Aphid (Pineus Coloradensis). Dept. of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station, 1977.