APA (7th ed.) Citation

Clark, A., Souter, R. A., & Schlaegel, B. E. (1991). Stem profile equations for southern tree species. Southeastern Forest Experiment Station.

Chicago Style (17th ed.) Citation

Clark, Alexander, Ray A. Souter, and Bryce E. Schlaegel. Stem Profile Equations for Southern Tree Species. Asheville, N.C.: Southeastern Forest Experiment Station, 1991.

MLA (9th ed.) Citation

Clark, Alexander, et al. Stem Profile Equations for Southern Tree Species. Southeastern Forest Experiment Station, 1991.