APA (7th ed.) Citation

Williams, W. E. (1951). A book of English essays ([New and enl. ed.].). Penguin Books.

Chicago Style (17th ed.) Citation

Williams, William Emrys. A Book of English Essays. [New and enl. ed.]. Harmondsworth, [Eng.]: Penguin Books, 1951.

MLA (9th ed.) Citation

Williams, William Emrys. A Book of English Essays. [New and enl. ed.]. Penguin Books, 1951.