APA
National Productivity Council New Delhi, National Productivity Council New Delhi, . (1965). Refractories industry in USA, Britain and West Germany. : .
Chicago
National Productivity Council New Delhi, National Productivity Council New Delhi, . 1965. Refractories industry in USA, Britain and West Germany. : .
Harvard
National Productivity Council New Delhi, National Productivity Council New Delhi, . (1965). Refractories industry in USA, Britain and West Germany. : .
MLA
National Productivity Council New Delhi, National Productivity Council New Delhi, . Refractories industry in USA, Britain and West Germany. : . 1965.