APA استشهاد

Warren, E. (1972). A republic if you can keep it. Quadrangle books.

استشهاد بنمط شيكاغو

Warren, Earl. A Republic If You Can Keep It. NewYork: Quadrangle books, 1972.

MLA استشهاد

Warren, Earl. A Republic If You Can Keep It. Quadrangle books, 1972.