Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (8th ed.)

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