Cita APA (7th ed.)
Shu, N. C. (1999). Visual programming: Perspectives and approaches. IBM Systems Journal.
Cita Chicago (17th ed.)
Shu, N C. "Visual Programming: Perspectives and Approaches." IBM Systems Journal 1999.
Cita MLA (9th ed.)
Shu, N C. "Visual Programming: Perspectives and Approaches." IBM Systems Journal, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.