APA (7th ed.) Citation

Toulmin, H. A. (1949). Handbook of patents. D. Van Nostrand Co.

Chicago Style (17th ed.) Citation

Toulmin, Harry Aubrey. Handbook of Patents. New York: D. Van Nostrand Co, 1949.

MLA (9th ed.) Citation

Toulmin, Harry Aubrey. Handbook of Patents. D. Van Nostrand Co, 1949.