APA (7th ed.) Citation

Lucan & Duff, J. D. (1951). Lucan. Harvard University Press.

Chicago Style (17th ed.) Citation

Lucan and J. D. Duff. Lucan. Cambridge: Harvard University Press, 1951.

MLA (9th ed.) Citation

Lucan and J. D. Duff. Lucan. Harvard University Press, 1951.