Birley, R. Speeches and Documents in American History. Oxford University Press.
Chicago-Zitierstil (17. Ausg.)Birley, Robert. Speeches and Documents in American History. London [u.a.]: Oxford University Press.
MLA-Zitierstil (8. Ausg.)Birley, Robert. Speeches and Documents in American History. Oxford University Press.
警告：這些引文格式不一定是100％准確.