Cita APA (7a ed.)
Howard, G. (2005). The invasive species problem. Technical Centre for Agricultural and Rural Cooperation.
Cita Chicago Style (17a ed.)
Howard, Geoffrey. The Invasive Species Problem. Technical Centre for Agricultural and Rural Cooperation, 2005.
Cita MLA (9a ed.)
Howard, Geoffrey. The Invasive Species Problem. Technical Centre for Agricultural and Rural Cooperation, 2005.
Precaución: Estas citas no son 100% exactas.