Crump, A. (1991). Dictionary of environment and development: People, places, ideas and organizations. Earthscan.
Citazione stile Chigago Style (17a edizione)Crump, Andy. Dictionary of Environment and Development: People, Places, Ideas and Organizations. London: Earthscan, 1991.
Citatione MLA (9a ed.)Crump, Andy. Dictionary of Environment and Development: People, Places, Ideas and Organizations. Earthscan, 1991.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.