Heymann, F. G. (1966). Poland & Czechoslovakia Republic. Prentice-Hall.
芝加哥风格引文Heymann, Frederick Gotthold. Poland & Czechoslovakia Republic. Englewood Cliffs, N.J: Prentice-Hall, 1966.
MLA引文Heymann, Frederick Gotthold. Poland & Czechoslovakia Republic. Prentice-Hall, 1966.
警告：这些引文格式不一定是100％准确.