Lua APA (7ú heag.)
Howard, P. (2011). An introduction to landscape. Ashgate.
Lua i Stíl Chicago (17ú heag.)
Howard, Peter. An Introduction to Landscape. Farnham, Surrey, England ; Burlington, Vt.: Ashgate, 2011.
Lua MLA (9ú heag.)
Howard, Peter. An Introduction to Landscape. Ashgate, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.