Cita APA (7a ed.)

Thorp, W. 1. (1963). American Writing in the Twentieth Century. Harvard University press.

Cita Chicago Style (17a ed.)

Thorp, Willard 1899. American Writing in the Twentieth Century. Cambridge: Harvard University press, 1963.

Cita MLA (9a ed.)

Thorp, Willard 1899. American Writing in the Twentieth Century. Harvard University press, 1963.