Sheppard, S. R. (1989). Visual Simulation A User's Guide For Architects, Engineers And Planners Stephen R.j Sheppard. Van Nostrand Reinhold.
Lua i Stíl Chicago (17ú heag.)Sheppard, Stephen R.J. Visual Simulation A User's Guide For Architects, Engineers And Planners Stephen R.j Sheppard. Van Nostrand Reinhold, 1989.
Lua MLA (8ú heag.)Sheppard, Stephen R.J. Visual Simulation A User's Guide For Architects, Engineers And Planners Stephen R.j Sheppard. Van Nostrand Reinhold, 1989.
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