APA
Indian Standards Institution, . (1982). Specification for precast concrete lintels and sills, IS9893-1981. New Delhi: Indian Standards Institution.
Chicago
Indian Standards Institution, . 1982. Specification for precast concrete lintels and sills, IS9893-1981. New Delhi: Indian Standards Institution.
Harvard
Indian Standards Institution, . (1982). Specification for precast concrete lintels and sills, IS9893-1981. New Delhi: Indian Standards Institution.
MLA
Indian Standards Institution, . Specification for precast concrete lintels and sills, IS9893-1981. New Delhi: Indian Standards Institution. 1982.