1. Akhtar, N. (1997).Studies on Induction of Somatic Embryogenesis and Production of Artificial Seeds for Micropropagation of a Tropical Fruit Tree, Guava(Psidium guajava L.). Ph.D. Thesis. Banaras Hindu University, Varanasi, India. 203 pp.
2. Akhtar, N. (2011). Progress in biotechnology of guava (Psidium guajavaL.). In:Microbial Biotechnology and Ecology.Volume II. (Vyas, D., Paliwal, G. S., Khare, P. K. and Gupta, R. K., Eds.). Daya Publication House, New Delhi, India. 501–519.
3. Akhtar, N. (2012). Somatic embryogenesis for high efficiency micropropagation of guava (Psidium guajavaL.). In:Protocols for Micropropagation of Selected Economically Important Horticultural Plants: Methods in Molecular Biology.(Lambardi, M., Ozudogru, E. A. and Jain, S. M., Eds.). Humana Press, Springer Science + Business Media, New York, USA. 161–178.
4. Akhtar, N., Kumari, N., Pandey, S., Ara, H., Singh, M., Jaiswal, U., Jaiswal, V. S. and Jain, S. M. (2000). Somatic embryogenesis in tropical fruit trees. In:Somatic Embryogenesis in Woody Plants.Volume 6. (Jain, S. M., Gupta, P. K. and Newton, R. J., Eds.). Kluwer Academic Publishers, Dordrecht, The Netherlands. 93–140.
5. Hammerschlag, F. A. and Litz, R. E. (1992).Biotechnology of Perennial Fruit Crops.CAB International, Wallingford, Oxon., UK. 550 pp.