Palmer, J. (1994). The Handbook of environmental education. Routledge.
Cita Chicago (17th ed.)Palmer, Joy. The Handbook of Environmental Education. London: Routledge, 1994.
Cita MLA (9th ed.)Palmer, Joy. The Handbook of Environmental Education. Routledge, 1994.
Atenció: Aquestes cites poden no estar 100% correctes.