Cita APA (7a ed.)

Walker, P. A., & Davis, J. R. (1978). The Nelligen Geographic Processing System: System design. CSIRO Division of Land Use Research.

Cita Chicago Style (17a ed.)

Walker, P. A., y J. R. Davis. The Nelligen Geographic Processing System: System Design. Canberra: CSIRO Division of Land Use Research, 1978.

Cita MLA (8a ed.)

Walker, P. A., y J. R. Davis. The Nelligen Geographic Processing System: System Design. CSIRO Division of Land Use Research, 1978.