Straley, S. J., & Karasek, D. (1990). Advanced programming in Clipper with C. Addison-Wesley.
Lua i Stíl Chicago (17ú heag.)Straley, Stephen J., agus David Karasek. Advanced Programming in Clipper with C. Reading: Addison-Wesley, 1990.
Lua MLA (9ú heag.)Straley, Stephen J., agus David Karasek. Advanced Programming in Clipper with C. Addison-Wesley, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.