APA (7th ed.) Citation

Lawrence, G. H. M. (1955). An Introduction to plant taxonomy. The Macmillan.

Chicago Style (17th ed.) Citation

Lawrence, George H. M. An Introduction to Plant Taxonomy. New York: The Macmillan, 1955.

MLA (9th ed.) Citation

Lawrence, George H. M. An Introduction to Plant Taxonomy. The Macmillan, 1955.