Halsema, J. J. (1983). E.J. Halsema: Colonial engineer (II). E.J. Halsema: colonial engineer (II)..
芝加哥风格引文Halsema, James J. "E.J. Halsema: Colonial Engineer (II)." E.J. Halsema: Colonial Engineer (II). 1983.
MLA引文Halsema, James J. "E.J. Halsema: Colonial Engineer (II)." E.J. Halsema: Colonial Engineer (II)., 1983.
警告：这些引文格式不一定是100％准确.