APA (7th ed.) Citation

Sinclair, W. A. (1945). An introduction to philosophy (Third Impression.). Oxford University Press.

Chicago Style (17th ed.) Citation

Sinclair, William Angus. An Introduction to Philosophy. Third Impression. London ; New York ; Toronto: Oxford University Press, 1945.

MLA (9th ed.) Citation

Sinclair, William Angus. An Introduction to Philosophy. Third Impression. Oxford University Press, 1945.