Indian standards institution . ISI. (1979). Specification for admixtures for concrete (1.). Indian standards institution.
শিকাগো স্টাইলে সাইটেশনIndian standards institution . ISI. Specification for Admixtures for Concrete. 1. New Delhi: Indian standards institution, 1979.
এমএলএ সাইটেশনIndian standards institution . ISI. Specification for Admixtures for Concrete. 1. Indian standards institution, 1979.