Robertson, M. (2014). Sustainability: Principles and practice. Routledge.
Citazione stile Chigago Style (17a edizione)Robertson, Margaret. Sustainability: Principles and Practice. New York: Routledge, 2014.
Citatione MLA (9a ed.)Robertson, Margaret. Sustainability: Principles and Practice. Routledge, 2014.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.