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.