APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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