WEIR, M. (1981). Statistical and natural resources data collection. Dep. kartografi.
芝加哥风格引文WEIR, M. Statistical and Natural Resources Data Collection. T.k: Dep. kartografi, 1981.
MLA引文WEIR, M. Statistical and Natural Resources Data Collection. Dep. kartografi, 1981.
警告：这些引文格式不一定是100％准确.