APA (7th ed.) Citation

Johnson, A. M. (1931). Taxonomy of the flowering plants. The Century co..

Chicago Style (17th ed.) Citation

Johnson, Arthur Monrad. Taxonomy of the Flowering Plants. New York, London: The Century co., 1931.

MLA (9th ed.) Citation

Johnson, Arthur Monrad. Taxonomy of the Flowering Plants. The Century co., 1931.