APA (7th ed.) Citation

Facts on File, Inc, Blackmore, S., & Tootill, E. (1984). The Facts on File dictionary of botany. Facts on File.

Chicago Style (17th ed.) Citation

Facts on File, Inc, Stephen Blackmore, and Elizabeth Tootill. The Facts on File Dictionary of Botany. [New York, N.Y.]: Facts on File, 1984.

MLA (9th ed.) Citation

Facts on File, Inc, et al. The Facts on File Dictionary of Botany. Facts on File, 1984.