APA (7th ed.) Citation

Perkins, H. A. (1940). A course of physics (3rd print.). Blackie & Son.

Chicago Style (17th ed.) Citation

Perkins, Henry A. A Course of Physics. 3rd print. London [etc.]: Blackie & Son, 1940.

MLA (9th ed.) Citation

Perkins, Henry A. A Course of Physics. 3rd print. Blackie & Son, 1940.

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