Keefe, E. K. (1972). Area handbook for Czechoslovakia. U.S. Government Printing Office.
芝加哥风格引文Keefe, Eugene K. Area Handbook for Czechoslovakia. Washington, D.C: U.S. Government Printing Office, 1972.
MLA引文Keefe, Eugene K. Area Handbook for Czechoslovakia. U.S. Government Printing Office, 1972.
警告：这些引文格式不一定是100％准确.