APA (7th ed.) Citation

Lawrence, G. H. M. (1951). Taxonomy of vascular plants. Macmillan.

Chicago Style (17th ed.) Citation

Lawrence, George H M. Taxonomy of Vascular Plants. New York: Macmillan, 1951.

MLA (9th ed.) Citation

Lawrence, George H M. Taxonomy of Vascular Plants. Macmillan, 1951.