APA
Bureau of Indian Standards, . (1989). Specification for hollow clay tiles for floors and roofs 3951(part II)-1975. : Bureau of Indian Standards.
Chicago
Bureau of Indian Standards, . 1989. Specification for hollow clay tiles for floors and roofs 3951(part II)-1975. : Bureau of Indian Standards.
Harvard
Bureau of Indian Standards, . (1989). Specification for hollow clay tiles for floors and roofs 3951(part II)-1975. : Bureau of Indian Standards.
MLA
Bureau of Indian Standards, . Specification for hollow clay tiles for floors and roofs 3951(part II)-1975. : Bureau of Indian Standards. 1989.