APA (7th ed.) Citation

Scofield, W. F., O'Brien, W. H., & Hansen, H. J. (1949). Modern timber engineering (3d ed.). Southern Pine Assn..

Chicago Style (17th ed.) Citation

Scofield, Walter Fleming, William Howard O'Brien, and Howard James Hansen. Modern Timber Engineering. 3d ed. New Orleans: Southern Pine Assn., 1949.

MLA (9th ed.) Citation

Scofield, Walter Fleming, et al. Modern Timber Engineering. 3d ed. Southern Pine Assn., 1949.