Dubé, R. L. (1997). Natural pattern forms: A practical sourcebook for landscape design. Wiley.
Chicago Style (17th ed.) CitationDubé, Richard L. Natural Pattern Forms: A Practical Sourcebook for Landscape Design. New York u.a: Wiley, 1997.
MLA (9th ed.) CitationDubé, Richard L. Natural Pattern Forms: A Practical Sourcebook for Landscape Design. Wiley, 1997.
Warning: These citations may not always be 100% accurate.