APA
IS:818-1957, . (1958). Code of practice for safety and health requirements in electric and gas welding and cutting operations. ISI: New Delhi.
Chicago
IS:818-1957, . 1958. Code of practice for safety and health requirements in electric and gas welding and cutting operations. ISI: New Delhi.
Harvard
IS:818-1957, . (1958). Code of practice for safety and health requirements in electric and gas welding and cutting operations. ISI: New Delhi.
MLA
IS:818-1957, . Code of practice for safety and health requirements in electric and gas welding and cutting operations. ISI: New Delhi. 1958.