Walker, P. A., & Davis, J. R. (1978). The Nelligen Geographic Processing System: System design. CSIRO Division of Land Use Research.
芝加哥风格引文Walker, P. A., 与 J. R. Davis. The Nelligen Geographic Processing System: System Design. Canberra: CSIRO Division of Land Use Research, 1978.
MLA引文Walker, P. A., 与 J. R. Davis. The Nelligen Geographic Processing System: System Design. CSIRO Division of Land Use Research, 1978.
警告：这些引文格式不一定是100％准确.