Kosinski, L.A.; Elahi, K.M. (2012). "1 Introduction". Population Redistribution and Development in South Asia. Springer Science & Business Media. p. 6. ISBN978-9400953093.
Khalidi, Noor Ahmad (1 January 1991). "Afghanistan: Demographic consequences of war, 1978–1987". Central Asian Survey. 10 (3): 101–126. doi:10.1080/02634939108400750. PMID12317412 – via Taylor and Francis+NEJM.
Khalidi, Noor Ahmad (1 January 1991). "Afghanistan: Demographic consequences of war, 1978–1987". Central Asian Survey. 10 (3): 101–126. doi:10.1080/02634939108400750. PMID12317412 – via Taylor and Francis+NEJM.