Straley, S. J., & Karasek, D. (1990). Advanced programming in Clipper with C. Addison-Wesley.
Cita Chicago (17th ed.)Straley, Stephen J., i David Karasek. Advanced Programming in Clipper with C. Reading: Addison-Wesley, 1990.
Cita MLA (9th ed.)Straley, Stephen J., i David Karasek. Advanced Programming in Clipper with C. Addison-Wesley, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.