Veith, G. J. (2012). Black April: The fall of South Vietnam, 1973-1975 (First American edition.). Encounter Books.
芝加哥风格引文Veith, George J. Black April: The Fall of South Vietnam, 1973-1975. First American edition. New York: Encounter Books, 2012.
MLA引文Veith, George J. Black April: The Fall of South Vietnam, 1973-1975. First American edition. Encounter Books, 2012.
警告：这些引文格式不一定是100％准确.