Ellerman, D. R. (1990). Modeling policy outcomes: Decision making at local transit agencies. VSP.
Cita Chicago (17th ed.)Ellerman, Donald R. Modeling Policy Outcomes: Decision Making at Local Transit Agencies. Utrecht, The Netherlands: VSP, 1990.
Cita MLA (9th ed.)Ellerman, Donald R. Modeling Policy Outcomes: Decision Making at Local Transit Agencies. VSP, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.