Speedy, A. (1990). Developing world agriculture. Grosvenor Press International.
Cita Chicago Style (17a ed.)Speedy, Andrew. Developing World Agriculture. London: Grosvenor Press International, 1990.
Cita MLA (8a ed.)Speedy, Andrew. Developing World Agriculture. Grosvenor Press International, 1990.
Precaución: Estas citas no son 100% exactas.