APA (7th ed.) Citation

Routh, H. V. (1950). English literature and ideas in the twentieth century: An inquiry into present difficulties and future prospects (3rd ed.). Methuen.

Chicago Style (17th ed.) Citation

Routh, Harold V. English Literature and Ideas in the Twentieth Century: An Inquiry into Present Difficulties and Future Prospects. 3rd ed. London: Methuen, 1950.

MLA (9th ed.) Citation

Routh, Harold V. English Literature and Ideas in the Twentieth Century: An Inquiry into Present Difficulties and Future Prospects. 3rd ed. Methuen, 1950.