APA
NATIONAL ROLLING & STEEL ROPES LTD, NATIONAL ROLLING & STEEL ROPES LTD, . (1961). Report and accounts. Calcutta: National Rolling & Steel Ropes Ltd.
Chicago
NATIONAL ROLLING & STEEL ROPES LTD, NATIONAL ROLLING & STEEL ROPES LTD, . 1961. Report and accounts. Calcutta: National Rolling & Steel Ropes Ltd.
Harvard
NATIONAL ROLLING & STEEL ROPES LTD, NATIONAL ROLLING & STEEL ROPES LTD, . (1961). Report and accounts. Calcutta: National Rolling & Steel Ropes Ltd.
MLA
NATIONAL ROLLING & STEEL ROPES LTD, NATIONAL ROLLING & STEEL ROPES LTD, . Report and accounts. Calcutta: National Rolling & Steel Ropes Ltd. 1961.