References
- Clement P. Harris A. Davies J. (1993): Finches and sparrows. – London.
- Cramp, S. & K. E. L. Perrins (Eds) (1994): The birds of the Western Palaearctic. Vol. 8. –Oxford.
- Fry C.H. Keith S. Urban E.K. (1988): The birds of Africa. Vol. 3. – London.
- Gillard L. (1985): Southern African Bird Calls. – Southern Africa Ornithological Society.
- Goodman S.M. Meininger P.L. (1989): The birds of Egypt. – Oxford &New York, 551 pp.
- Jennings M.C. (1981): The Birds of Saudi Arabia: a check-list. – Cambridge, 112 pp.
- Jonsson L. (1992): Die Vögel Europas. – Stuttgart.
- Meininger P.L. Goodman S.M. (1996): From the verge of the Western Palaearctic: birds of Gebel Elba area, Egypt. – Dutch Birding 18: 285–292, Schiedam.
- Nikolaus G. (1987): Distribution Atlas of Sudan’s birds with notes on habitat and status. –Bonner Zoologische Monographien 25: 1–322, Bonn.
- Sibley C.G. Monroe B.L. (1990): Distribution and Taxonomy of Birds of the World. – New Haven &London.