Indian standards institution . ISI. (1979). Specification for admixtures for concrete (1.). Indian standards institution.
استشهاد بنمط شيكاغوIndian standards institution . ISI. Specification for Admixtures for Concrete. 1. New Delhi: Indian standards institution, 1979.
MLA استشهادIndian standards institution . ISI. Specification for Admixtures for Concrete. 1. Indian standards institution, 1979.