Walker, P. A., Smith, D. J., & Davis, J. R. (1978). Computer programs for the Nelligen Geographic Processing System. CSIRO Division of Land Use Research.
芝加哥风格引文Walker, P. A., D. J. Smith, 与 J. R. Davis. Computer Programs for the Nelligen Geographic Processing System. Canberra: CSIRO Division of Land Use Research, 1978.
MLA引文Walker, P. A., et al. Computer Programs for the Nelligen Geographic Processing System. CSIRO Division of Land Use Research, 1978.
警告：这些引文格式不一定是100％准确.