APA (7th ed.) Citation

Walker, P. A., Smith, D. J., & Davis, J. R. (1978). Computer programs for the Nelligen Geographic Processing System. CSIRO Division of Land Use Research.

Chicago Style (17th ed.) Citation

Walker, P. A., D. J. Smith, and J. R. Davis. Computer Programs for the Nelligen Geographic Processing System. Canberra: CSIRO Division of Land Use Research, 1978.

MLA (8th ed.) Citation

Walker, P. A., et al. Computer Programs for the Nelligen Geographic Processing System. CSIRO Division of Land Use Research, 1978.