APA (7th ed.) Citation

Onions, C., Friedrichsen, G., & Burchfield, R. (1966). The Oxford dictionary of English etymology. Clarendon Press.

Chicago Style (17th ed.) Citation

Onions, C.T, G.W.S Friedrichsen, and R.W Burchfield. The Oxford Dictionary of English Etymology. Oxford: Clarendon Press, 1966.

MLA (9th ed.) Citation

Onions, C.T, et al. The Oxford Dictionary of English Etymology. Clarendon Press, 1966.