APA (7th ed.) Citation

National Computing Centre Limited. (1970). Systems documentation manual: Data processing standards (2nd ed.). NCC.

Chicago Style (17th ed.) Citation

National Computing Centre Limited. Systems Documentation Manual: Data Processing Standards. 2nd ed. Lond.: NCC, 1970.

MLA (8th ed.) Citation

National Computing Centre Limited. Systems Documentation Manual: Data Processing Standards. 2nd ed. NCC, 1970.

Warning: These citations may not always be 100% accurate.