APA

"United Nations E. A. S. C. F. A. A. T. P., "United Nations E. A. S. C. F. A. A. T. P., . (1979). Proceedings of the workshop on efficient use and maintenance of irrigation systems at the farm level in China. New: York United Nations U S A.

Chicago

"United Nations Economic And Social Commission For Asia And The Pacific", "United Nations Economic And Social Commission For Asia And The Pacific", . 1979. Proceedings of the workshop on efficient use and maintenance of irrigation systems at the farm level in China. New: York United Nations U S A.

Harvard

"United Nations E. A. S. C. F. A. A. T. P., "United Nations E. A. S. C. F. A. A. T. P., . (1979). Proceedings of the workshop on efficient use and maintenance of irrigation systems at the farm level in China. New: York United Nations U S A.

MLA

"United Nations Economic And Social Commission For Asia And The Pacific", "United Nations Economic And Social Commission For Asia And The Pacific", . Proceedings of the workshop on efficient use and maintenance of irrigation systems at the farm level in China. New: York United Nations U S A. 1979.