APA
NATIONAL COMMITTEE ON THE USE OF PLASTICS IN AGRICULTURE, . (1990). Proceedings of XI International Congress : the use of Plastics in Agriculture, 26th Feb to 2nd march 1990 New Delhi India. : .
Chicago
NATIONAL COMMITTEE ON THE USE OF PLASTICS IN AGRICULTURE, . 1990. Proceedings of XI International Congress : the use of Plastics in Agriculture, 26th Feb to 2nd march 1990 New Delhi India. : .
Harvard
NATIONAL COMMITTEE ON THE USE OF PLASTICS IN AGRICULTURE, . (1990). Proceedings of XI International Congress : the use of Plastics in Agriculture, 26th Feb to 2nd march 1990 New Delhi India. : .
MLA
NATIONAL COMMITTEE ON THE USE OF PLASTICS IN AGRICULTURE, . Proceedings of XI International Congress : the use of Plastics in Agriculture, 26th Feb to 2nd march 1990 New Delhi India. : . 1990.