Elkington, J. (2012). The zeronauts: Breaking the sustainability barrier. Routledge.
Cita Chicago Style (17a ed.)Elkington, John. The Zeronauts: Breaking the Sustainability Barrier. London: Routledge, 2012.
Cita MLA (9a ed.)Elkington, John. The Zeronauts: Breaking the Sustainability Barrier. Routledge, 2012.
Precaución: Estas citas no son 100% exactas.