APA
Indian standards institution, . (1969). Method of test for toughness of natural building stones. New Delhi: Indian standards institution.
Chicago
Indian standards institution, . 1969. Method of test for toughness of natural building stones. New Delhi: Indian standards institution.
Harvard
Indian standards institution, . (1969). Method of test for toughness of natural building stones. New Delhi: Indian standards institution.
MLA
Indian standards institution, . Method of test for toughness of natural building stones. New Delhi: Indian standards institution. 1969.