Lewis, R., & Blakeley, B. H. (1974). Elements of BASIC (2nd edition.). NCC Publications.
Cita Chicago (17th ed.)Lewis, R., i B. H. Blakeley. Elements of BASIC. 2nd edition. Manchester: NCC Publications, 1974.
Cita MLA (8th ed.)Lewis, R., i B. H. Blakeley. Elements of BASIC. 2nd edition. NCC Publications, 1974.
Atenció: Aquestes cites poden no estar 100% correctes.