APA استشهاد

Downer, A. S. . .. (1961). Recent American drama (1.). Oxford University Press.

استشهاد بنمط شيكاغو

Downer, Alan S. Recent American Drama. 1. London: Oxford University Press, 1961.

MLA استشهاد

Downer, Alan S. Recent American Drama. 1. Oxford University Press, 1961.