Holden, R. (2011). Construction for landscape architecture. Laurence King Publishing.
Lua i Stíl Chicago (17ú heag.)Holden, Robert. Construction for Landscape Architecture. Laurence King Publishing, 2011.
Lua MLA (8ú heag.)Holden, Robert. Construction for Landscape Architecture. Laurence King Publishing, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.