APA (7th ed.) Citation

Coombes, A. J. (1985). Timber Press dictionary of plant names. Timber Press.

Chicago Style (17th ed.) Citation

Coombes, Allen J. Timber Press Dictionary of Plant Names. Portland, Or.: Timber Press, 1985.

MLA (9th ed.) Citation

Coombes, Allen J. Timber Press Dictionary of Plant Names. Timber Press, 1985.