1. L. B. Okun, Leptons and Quarks (North-Holland, Amsterdam, 1981).
2. D.H. Perkins, Introduction to High-Energy Physics, 2nd ed. (Addison-Wesley, Reading, Massachusetts, 1982).
3. J.R. Aitchison and A.J.G. Hey, Gauge Theories in Particle Physics (Hilger, Bristol, 1982).
4. E. Leader and E. Predazzi, An Introduction to Gauge Theories and the New Physics (Cambridge, 1982).
5. C. Quigg, Gauge Theories of the Strong, Weak and Electromagnetic Interactions (Benjamin/Cummings, Reading, Massachusetts, 1983).