APA (7th ed.) Citation

Thorp, W. (1963). American writing in the twentieth century. Harvard University Press.

Chicago Style (17th ed.) Citation

Thorp, Willard. American Writing in the Twentieth Century. Cambridge: Harvard University Press, 1963.

MLA (9th ed.) Citation

Thorp, Willard. American Writing in the Twentieth Century. Harvard University Press, 1963.

Warning: These citations may not always be 100% accurate.