1. Acheampong, A. K., Akromah, R., Ofori, F. A., Takrama, J. F., & Zeidan, M. (2008). Is there Avocado sunblotch viroid in Ghana? African Journal of Biotechnology, 7, 3540–3545.
2. Bar-Joseph, M., Gumpf, D. J., Dodds, J. A., Rosner, A., & Ginzberg, I. (1985). A simple purification method for citrus tristeza virus and estimation of its genome size. Phytopathology, 75, 195–198.
3. Bergh, B. O. (1974). Avocado research in Israel. California Avocado Society Yearbook, 58, 103–126.
4. Coit, J. E. (1928). Sunblotch of the avocado. California Avocado Society Yearbook, 20, 27–32.
5. Da Graca, J. V. (1985). Sunblotch associated reduction in fruit yield in both symptomatic and symptomless carrier trees. South Africa AvocadoGrower’s Association Yearbook, 8, 59.