APA (7th ed.) Citation

Onions, C. T., Friedrichsen, G., & Burchfield, R. W. (1992). Oxford dictionary of English etymology. Oxford University Press.

Chicago Style (17th ed.) Citation

Onions, C. T., G.W.S Friedrichsen, and Robert William Burchfield. Oxford Dictionary of English Etymology. Oxford: Oxford University Press, 1992.

MLA (9th ed.) Citation

Onions, C. T., et al. Oxford Dictionary of English Etymology. Oxford University Press, 1992.