Three plays: The white devil, The Duchess of Malfi [and] The devil's law-case.

MLA

Webster, John, and D. C Gunby. Three Plays: The White Devil, The Duchess of Malfi [and] The Devil's Law-case. [Harmondsworth, Eng.: Penguin Books, 1972.

APA

Webster, J., & Gunby, D. C. (1972). Three plays: The white devil, The Duchess of Malfi [and] The devil's law-case. [Harmondsworth, Eng.: Penguin Books.

Chicago

Webster, John, and D. C Gunby. Three Plays: The White Devil, The Duchess of Malfi [and] The Devil's Law-Case. [Harmondsworth, Eng.: Penguin Books, 1972.