Cita APA (7a ed.)

Heyd, T. (2007). Encountering nature: Toward an environmental culture. Ashgate.

Cita Chicago Style (17a ed.)

Heyd, Thomas. Encountering Nature: Toward an Environmental Culture. Aldershot, England ; Burlington, VT: Ashgate, 2007.

Cita MLA (9a ed.)

Heyd, Thomas. Encountering Nature: Toward an Environmental Culture. Ashgate, 2007.