APA استشهاد

Stern, P. V. D. (1940). life and writings of Abraham Lincoln. Modern Library.

استشهاد بنمط شيكاغو

Stern, Philip Van Doren. Life and Writings of Abraham Lincoln. New york: Modern Library, 1940.

MLA استشهاد

Stern, Philip Van Doren. Life and Writings of Abraham Lincoln. Modern Library, 1940.