APA (7th ed.) Citation

Collingwood, R. G. (1938). The principles of art. The Clarendon Press.

Chicago Style (17th ed.) Citation

Collingwood, R. G. The Principles of Art. Oxford: The Clarendon Press, 1938.

MLA (9th ed.) Citation

Collingwood, R. G. The Principles of Art. The Clarendon Press, 1938.