APA (7th ed.) Citation

Safranyik, L., Barclay, H. J., & Simmons, C. S. (1990). A conceptual model of spruce beetle population dynamics. Forestry Canada, Pacific and Yukon Region, Pacific Forestry Centre.

Chicago Style (17th ed.) Citation

Safranyik, L., H. J. Barclay, and C. S. Simmons. A Conceptual Model of Spruce Beetle Population Dynamics. Victoria, British Columbia: Forestry Canada, Pacific and Yukon Region, Pacific Forestry Centre, 1990.

MLA (9th ed.) Citation

Safranyik, L., et al. A Conceptual Model of Spruce Beetle Population Dynamics. Forestry Canada, Pacific and Yukon Region, Pacific Forestry Centre, 1990.