APA (7th ed.) Zitazioa
Howard, P. (2011). An introduction to landscape. Ashgate.
Chicago Style (17th ed.) Zitazioa
Howard, Peter. An Introduction to Landscape. Farnham, Surrey, England ; Burlington, Vt.: Ashgate, 2011.
MLA (9th ed.) Zitazioa
Howard, Peter. An Introduction to Landscape. Ashgate, 2011.
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