Indian Standards Institution . ISI. (1982). Code of practice for inspection and maintenance of cross drainage works IS;7331-1981. Indian Standards Institution.
Chicago Edition CitationIndian Standards Institution . ISI. Code of Practice for Inspection and Maintenance of Cross Drainage Works IS;7331-1981. New Delhi: Indian Standards Institution, 1982.
MLA Edition CitationIndian Standards Institution . ISI. Code of Practice for Inspection and Maintenance of Cross Drainage Works IS;7331-1981. Indian Standards Institution, 1982.