APA
Indian Standards Institution, . (1982). Code of practice for inspection and maintenance of cross drainage works IS;7331-1981. New Delhi: Indian Standards Institution.
Chicago
Indian Standards Institution, . 1982. Code of practice for inspection and maintenance of cross drainage works IS;7331-1981. New Delhi: Indian Standards Institution.
Harvard
Indian Standards Institution, . (1982). Code of practice for inspection and maintenance of cross drainage works IS;7331-1981. New Delhi: Indian Standards Institution.
MLA
Indian Standards Institution, . Code of practice for inspection and maintenance of cross drainage works IS;7331-1981. New Delhi: Indian Standards Institution. 1982.
