APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Thompson, Richard. An Introduction to Physical Signs. Oxford [etc.]: Blackwell Scientific, 1980.

MLA (9th ed.) Citation

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

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