APA
Indian standards institution, . (1977). Method of test for determination of water absorption,apparent specific gravity and porosity of natural building stones. New Delhi: Indian standards institution.
Chicago
Indian standards institution, . 1977. Method of test for determination of water absorption,apparent specific gravity and porosity of natural building stones. New Delhi: Indian standards institution.
Harvard
Indian standards institution, . (1977). Method of test for determination of water absorption,apparent specific gravity and porosity of natural building stones. New Delhi: Indian standards institution.
MLA
Indian standards institution, . Method of test for determination of water absorption,apparent specific gravity and porosity of natural building stones. New Delhi: Indian standards institution. 1977.