(1948). A guide for the teaching of the history of the United States: A two-year course. [State Department of Education].
芝加哥风格引文A Guide for the Teaching of the History of the United States: A Two-year Course. Trenton, N.J: [State Department of Education], 1948.
MLA引文A Guide for the Teaching of the History of the United States: A Two-year Course. [State Department of Education], 1948.
警告：这些引文格式不一定是100％准确.