APA (7th ed.) Citation

Isaac, L. A. (1949). Better Douglas fir forests from better seed. University of Washington Press.

Chicago Style (17th ed.) Citation

Isaac, Leo A. Better Douglas Fir Forests from Better Seed. Seattle: University of Washington Press, 1949.

MLA (9th ed.) Citation

Isaac, Leo A. Better Douglas Fir Forests from Better Seed. University of Washington Press, 1949.