(1999). A twentieth century American reader. Washington, D.C: United States Department of State.
استشهاد بنمط شيكاغوA Twentieth Century American Reader. Washington, D.C: United States Department of State, 1999.
MLA استشهادA Twentieth Century American Reader. Washington, D.C: United States Department of State, 1999.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.