APA
Conway G., Barbier E., . (1990). After The Green Revolution : Sustainable Agriculture For Dev. : Earthscan Publications Ltd. London.
Chicago
Conway GR, Barbier EB, . 1990. After The Green Revolution : Sustainable Agriculture For Dev. : Earthscan Publications Ltd. London.
Harvard
Conway G., Barbier E., . (1990). After The Green Revolution : Sustainable Agriculture For Dev. : Earthscan Publications Ltd. London.
MLA
Conway GR, Barbier EB, . After The Green Revolution : Sustainable Agriculture For Dev. : Earthscan Publications Ltd. London. 1990.