APA (7th ed.) Citation

(1978). Harts rules for compositors and readers at the Oxford University Press (38th edition.). Oxford University Press.

Chicago Style (17th ed.) Citation

Harts Rules for Compositors and Readers at the Oxford University Press. 38th edition. Oxford: Oxford University Press, 1978.

MLA (8th ed.) Citation

Harts Rules for Compositors and Readers at the Oxford University Press. 38th edition. Oxford University Press, 1978.