APA (7th ed.) Citation

Onions, C. T. (1966). The Oxford dictionary of English etymology. Clarendon P..

Chicago Style (17th ed.) Citation

Onions, C. T. The Oxford Dictionary of English Etymology. Oxford: Clarendon P., 1966.

MLA (9th ed.) Citation

Onions, C. T. The Oxford Dictionary of English Etymology. Clarendon P., 1966.