APA (7th ed.) Citation

Thompson, R. (1980). An introduction to physical signs. Blackwell Scientific Publications.

Chicago Style (17th ed.) Citation

Thompson, Richard. An Introduction to Physical Signs. Oxford: Blackwell Scientific Publications, 1980.

MLA (8th ed.) Citation

Thompson, Richard. An Introduction to Physical Signs. Blackwell Scientific Publications, 1980.

Warning: These citations may not always be 100% accurate.