APA (7th ed.) Citation

Tolkien, J. R. R. J.R.R. Tolkien calendar. George Allen & Unwin.

Chicago Style (17th ed.) Citation

Tolkien, J. R. R. J.R.R. Tolkien Calendar. London: George Allen & Unwin.

MLA (8th ed.) Citation

Tolkien, J. R. R. J.R.R. Tolkien Calendar. George Allen & Unwin.

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