Mortimore, M., & Adams, W. M. (1999). Working the Sahel: Environment and society in northern Nigeria. Routledge.
Citazione stile Chigago Style (17a edizione)Mortimore, Michael, e W. M. Adams. Working the Sahel: Environment and Society in Northern Nigeria. London ; New York: Routledge, 1999.
Citatione MLA (9a ed.)Mortimore, Michael, e W. M. Adams. Working the Sahel: Environment and Society in Northern Nigeria. Routledge, 1999.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.