American Society of Landscape Architects. Visual impact assessment for highway projects. ASLA.
Cita Chicago (17th ed.)American Society of Landscape Architects. Visual Impact Assessment for Highway Projects. Washington, D.C: ASLA.
Cita MLA (9th ed.)American Society of Landscape Architects. Visual Impact Assessment for Highway Projects. ASLA.
Atenció: Aquestes cites poden no estar 100% correctes.