Tkach, D., Fang, W., & So, A. (1996). Visual modeling technique: Object technology using visual programmimg. Addison-Wesley.
Cita Chicago (17th ed.)Tkach, Daniel, Walter Fang, i Andrew So. Visual Modeling Technique: Object Technology Using Visual Programmimg. Menlo Park, Calif: Addison-Wesley, 1996.
Cita MLA (9th ed.)Tkach, Daniel, et al. Visual Modeling Technique: Object Technology Using Visual Programmimg. Addison-Wesley, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.