1. Stebbins GL (1950) Variation and evolution in plants. Columbia University Press, New York
2. Stebbins GL (1971) Chromosomal evolution in higher plants. Edward Arnold, London
3. Swanson CP (1958) Cytology and cytogenetics. Macmillan, London
4. Swanson CP, Timothy M, Young JW (1973) Cytogenetics. Printice-Hall India Pvt Ltd, New Delhi
5. Stace CA (1980) Chromosomal information. In: Willis AJ, Sleigh MA (eds) Plant taxonomy and biosystematics. Edward Arnold Limited, London, pp 113–134