APA (7th ed.) Citation

American Society of Landscape Architects. Professional Practice Institute. (1980). National directory of landscape architecture firms. The Institute.

Chicago Style (17th ed.) Citation

American Society of Landscape Architects. Professional Practice Institute. National Directory of Landscape Architecture Firms. Washington, D.C.: The Institute, 1980.

MLA (9th ed.) Citation

American Society of Landscape Architects. Professional Practice Institute. National Directory of Landscape Architecture Firms. The Institute, 1980.

Warning: These citations may not always be 100% accurate.