APA (7th ed.) Zitazioa
Heyd, T. (2007). Encountering nature: Toward an environmental culture. Ashgate.
Chicago Style (17th ed.) Zitazioa
Heyd, Thomas. Encountering Nature: Toward an Environmental Culture. Aldershot, England ; Burlington, VT: Ashgate, 2007.
MLA (9th ed.) Zitazioa
Heyd, Thomas. Encountering Nature: Toward an Environmental Culture. Ashgate, 2007.
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