Hanley, D. P., Schmidt, W. C., & Blake, G. M. (1975). Stand structure and successional status of two spruce-fir forests in southern Utah. Intermountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture.

Hanley, Donald P., Wyman C. Schmidt, and George M. Blake. Stand Structure and Successional Status of Two Spruce-fir Forests in Southern Utah. Ogden, Utah: Intermountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1975.

Hanley, Donald P., et al. Stand Structure and Successional Status of Two Spruce-fir Forests in Southern Utah. Intermountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1975.